PubHawk
June 2018 PMID 29727196

Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life.

Edward W Schwieterman, Nancy Y Kiang, Mary N Parenteau, Chester E Harman, Shiladitya DasSarma, Theresa M Fisher, Giada N Arney, Hilairy E Hartnett, Christopher T Reinhard, Stephanie L Olson, Victoria S Meadows, Charles S Cockell, Sara I Walker, John Lee Grenfell, Siddharth Hegde

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Mentions

237
Peak: 51 in Feb 2019
across 5 sources since Jan 2019

Extended reach

4,188,621
potential audience

Total likes

56,054

Video views

3,381,866

Mentions per month

Jan 2019 – Aug 2025

Where it's discussed

  • News117 articles
  • X / Twitter100 posts
  • Blogs11 articles
  • Facebook6 posts
  • YouTube3 videos

AI synopsis

What people are saying

Discussions prominently feature mentions of specific biosignatures, like methane and oxygen, which are pivotal in detecting life on exoplanets. Phrases such as 'game changer' and 'important research' highlight the enthusiasm and acknowledgment of the publication's value, propagating a tone of excitement and urgency within the community.

AgreementModerate agreement

The majority of discussions indicate a supportive stance toward the findings presented in the publication, with many users highlighting its relevance.

InterestHigh interest

There is widespread curiosity regarding exoplanet biosignatures, as evidenced by users sharing related articles and research.

EngagementHigh engagement

Many participants engage deeply, referencing specific biosignature gases and research literature, leading to meaningful exchange of ideas.

ImpactHigh impact

Users perceive this publication as highly influential, contributing significantly to ongoing conversations about the search for extraterrestrial life.

Abstract in brief

  • Advanced observatories will enhance our ability to study exoplanets' atmospheres and surfaces for signs of life, using Earth's biological signatures as a reference.
  • The review summarizes current knowledge on various biosignature types—gaseous, surface, and temporal—while evaluating lesser-known spectral features related to potential life.
  • It focuses on recent advancements in biosignature analysis, particularly methods to assess atmospheric chemical imbalances and the biomass needed for detectable gases, aiming to connect various research areas for future exploration.
Read the full abstract

Top posts

Most liked on X and Bluesky
KRS | கரச
@kryes · X

C55H72O5N4Mg - Chlorophyll Is there life on Earth? Yes, we know! But how to know it / measure it from Space? https://t.co/AxRejxH8tM

Feb 8, 2019 · 24 likes · 7 shares · 50,576 followers View post →
Martin Bauer
@martinmbauer · X

It is only a matter of time now until we have measurements sensitive to the abundance of methane, which together with O2 and O3 is a biosignature gas. 6/9 https://t.co/MZifx6fQWl

Sep 3, 2022 · 22 likes · 1 share · 94,865 followers View post →
Aline Novais
@astroaline · X

Deixo aqui algumas dicas: - Schwieterman et al. (2018) - “Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life” - Cockell et al. (2016) - “Habitability: A Review” - Seager & Deming (2010) - “Exoplanet Atmospheres”

Sep 29, 2022 · 18 likes · 19,026 followers View post →
Astrobiology Journal
@Astrobiology_jn · X

Highly cited article in the top 1% of the academic field of #SpaceScience! Read today: "Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life" https://t.co/oYrKNLCq8Z https://t.co/rmGctfEcJB

Sep 2, 2019 · 17 likes · 12 shares · 6,595 followers View post →
Be Smart
@okaytobesmart · X

NEW VIDEO! Is there life on Earth and how would we know if we didn’t know that? https://t.co/ImG4gBRwPb

Feb 7, 2019 · 16 likes · 4 shares · 41,927 followers View post →
Be Smart
@okaytobesmart · X

It's always my goal to make you think after you watch a video. Let's do that today, with a little post-episode CHALLENGE QUESTION! First, make sure you've watched my new video! https://t.co/ImG4gBRwPb

Feb 11, 2019 · 12 likes · 2 shares · 41,927 followers View post →

All mentions

Galacton
@Galacton2 · X

@Dirty_BBB @AtomicCafe7 @maestro_Ebuka @Luc1971723 @Truth_matters20 Yes, there is also research into biosignatures on Exoplanets which he is undoubtedly talking about.

Aug 13, 2025 · 220 followers View post →
Nirmata
@En_formare · X

Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life • Astrophysics Data System https://t.co/2oqCBTEytI https://t.co/wi20aO6ZUy

Feb 17, 2025 · 1 like · 440 followers View post →
Ido Irani
@IdoIrani · X

@ShaiNaamat @aviadsanders @SyomabCovid19 קישורים: gmt giant earth finder: https://t.co/YZVOP5fczg מאמר סקירה על ביומרקרים בכוכבי לכת https://t.co/crFR7i8MO4

Jul 27, 2023 · 2 likes · 357 followers View post →
Aline Novais
@astroaline · X

Deixo aqui algumas dicas: - Schwieterman et al. (2018) - “Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life” - Cockell et al. (2016) - “Habitability: A Review” - Seager & Deming (2010) - “Exoplanet Atmospheres”

Sep 29, 2022 · 18 likes · 19,026 followers View post →
Luke - Join Your Union
@troutish · X

RT @martinmbauer: It is only a matter of time now until we have measurements sensitive to the abundance of methane, which together with O2…

Sep 3, 2022 · 1 share · 2,824 followers View post →
ferminacevesd
@ferminacevesd · X

RT @martinmbauer: It is only a matter of time now until we have measurements sensitive to the abundance of methane, which together with O2…

Sep 3, 2022 · 1 share · 2,692 followers View post →
Martin Bauer
@martinmbauer · X

It is only a matter of time now until we have measurements sensitive to the abundance of methane, which together with O2 and O3 is a biosignature gas. 6/9 https://t.co/MZifx6fQWl

Sep 3, 2022 · 22 likes · 1 share · 94,865 followers View post →
Ryan Barker
@rbarker2190 · X

How many distant photons of some alien "milky sea" has the @NASAWebb already collected? https://t.co/LQZrHRLqUc

Jul 18, 2022 · 63 followers View post →
Jordana
@MissJordanaCook · X

RT @trackjwst: To anyone curious what bio signatures are and wants to know details how they can be used to find extra Terrestrial life . I…

Feb 27, 2022 · 4 shares · 1,532 followers View post →
Jordana
@MissJordanaCook · X

RT @trackjwst: To anyone curious what bio signatures are and wants to know details how they can be used to find extra Terrestrial life . I…

Feb 16, 2022 · 4 shares · 1,532 followers View post →
yorkg (dogged days)
@yorkg · X

RT @trackjwst: To anyone curious what bio signatures are and wants to know details how they can be used to find extra Terrestrial life . I…

Feb 15, 2022 · 4 shares · 598 followers View post →
Jordana
@MissJordanaCook · X

RT @trackjwst: To anyone curious what bio signatures are and wants to know details how they can be used to find extra Terrestrial life . I…

Feb 13, 2022 · 4 shares · 1,532 followers View post →
Apurva
@apurva_dg · X

To anyone curious what bio signatures are and wants to know details how they can be used to find extra Terrestrial life . I am linking a paper below. https://t.co/fQEQFkDmrP #space #jwst #NASAWebb

Feb 12, 2022 · 5 likes · 4 shares · 5,102 followers View post →
Advocates Needed: "CIVIL
@morrowmoreno · X

Feb 9, 2022 · 53 followers View post →
Astrobiology Journal
@Astrobiology_jn · X

Check out some highly cited research today! All 5 articles are open access: https://t.co/FZyKf3rdEg https://t.co/pbvxnuFNYY https://t.co/JThHzombme https://t.co/78iAENyg9i https://t.co/I9G7uzInUH https://t.co/Y5VAEDWTz9

Nov 11, 2020 · 6,595 followers View post →
Prof.(Dr) Arbind kumar
@drkumar3 · X

Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life | Astrobiology https://t.co/nZrMtBu83U

Sep 20, 2020 · 1,005 followers View post →
Dr. Ozan Kara
@kara_ozan · X

RT @Astrobiology_jn: Read highly cited open access #Astrobiology content now: 1. https://t.co/0Gk1zYIRNg 2. https://t.co/CMFHVTZ5Dm 3. h…

Mar 3, 2020 · 1 share · 1,320 followers View post →
Astrobiology Journal
@Astrobiology_jn · X

Read highly cited open access #Astrobiology content now: 1. https://t.co/0Gk1zYIRNg 2. https://t.co/CMFHVTZ5Dm 3. https://t.co/zPSyAcey0h 4. https://t.co/3rNoKJeSd8 5. https://t.co/A7HPAXQ5FX https://t.co/5ArHFtUvVh

Mar 3, 2020 · 3 likes · 1 share · 6,595 followers View post →
Marcos Silva
@mar_vinc · X

Liked on YouTube: Is There Life on Earth? https://t.co/V4vMTfvt6B

Nov 24, 2019 · 84 followers View post →
Angela B Mortimer
@AngelaMortimer2 · X

RT @Astrobiology_jn: Highly cited article in the top 1% of the academic field of #SpaceScience! Read today: "Exoplanet Biosignatures: A Re…

Sep 7, 2019 · 12 shares · 39,920 followers View post →
Dr. Stephanie Olson
@ExoStephO · X

RT @Astrobiology_jn: Highly cited article in the top 1% of the academic field of #SpaceScience! Read today: "Exoplanet Biosignatures: A Re…

Sep 3, 2019 · 12 shares · 1,308 followers View post →
Martin Bradley
@visago11 · X

RT @Astrobiology_jn: Highly cited article in the top 1% of the academic field of #SpaceScience! Read today: "Exoplanet Biosignatures: A Re…

Sep 3, 2019 · 12 shares · 376 followers View post →
SAVE DEMOCRACY : VoteBlue
@i4dzn · X

RT @Astrobiology_jn: Highly cited article in the top 1% of the academic field of #SpaceScience! Read today: "Exoplanet Biosignatures: A Re…

Sep 2, 2019 · 12 shares · 1,829 followers View post →
Blue Marble Space Institute of Science
@BlueMarbleSpace · X

RT @Astrobiology_jn: Highly cited article in the top 1% of the academic field of #SpaceScience! Read today: "Exoplanet Biosignatures: A Re…

Sep 2, 2019 · 12 shares · 5,666 followers View post →
Stephen R.
@StephenRevesz · X

RT @Astrobiology_jn: Highly cited article in the top 1% of the academic field of #SpaceScience! Read today: "Exoplanet Biosignatures: A Re…

Sep 2, 2019 · 12 shares · 405 followers View post →
Prof. Abel Méndez
@ProfAbelMendez · X

RT @Astrobiology_jn: Highly cited article in the top 1% of the academic field of #SpaceScience! Read today: "Exoplanet Biosignatures: A Re…

Sep 2, 2019 · 12 shares · 20,697 followers View post →
michel
@quark1972 · X

RT @Astrobiology_jn: Highly cited article in the top 1% of the academic field of #SpaceScience! Read today: "Exoplanet Biosignatures: A Re…

Sep 2, 2019 · 12 shares · 1,098 followers View post →
Syl
@astro_dust · X

RT @Astrobiology_jn: Highly cited article in the top 1% of the academic field of #SpaceScience! Read today: "Exoplanet Biosignatures: A Re…

Sep 2, 2019 · 12 shares · 766 followers View post →
Aurora
@StellarAurora_ · X

RT @Astrobiology_jn: Highly cited article in the top 1% of the academic field of #SpaceScience! Read today: "Exoplanet Biosignatures: A Re…

Sep 2, 2019 · 12 shares · 101 followers View post →
SAGANet
@saganorg · X

RT @Astrobiology_jn: Highly cited article in the top 1% of the academic field of #SpaceScience! Read today: "Exoplanet Biosignatures: A Re…

Sep 2, 2019 · 12 shares · 4,821 followers View post →
Astrobiology Journal
@Astrobiology_jn · X

Highly cited article in the top 1% of the academic field of #SpaceScience! Read today: "Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life" https://t.co/oYrKNLCq8Z https://t.co/rmGctfEcJB

Sep 2, 2019 · 17 likes · 12 shares · 6,595 followers View post →
Suki Ewers
@sukianemone · X

RT @LiebertPub: Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life. A highly cited article from @Astrobiology_jn

Aug 28, 2019 · 2 shares · 800 followers View post →
SAGANet
@saganorg · X

RT @LiebertPub: Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life. A highly cited article from @Astrobiology_jn

Aug 26, 2019 · 2 shares · 4,821 followers View post →
Mary Ann Liebert Inc
@LiebertPub · X

Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life. A highly cited article from @Astrobiology_jn

Aug 26, 2019 · 3 likes · 2 shares · 4,822 followers View post →
Mary Ann Liebert Inc
@LiebertPub · X

Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life. A highly cited article from @Astrobiology_jn: https://t.co/WCN93aaMUT #Exoplanets #Biosignatures

Aug 26, 2019 · 1 like · 4,822 followers View post →
StillMe
@dutchess_becky · X

RT @AstroBioProf: "Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life" See https://t.co/Uvb4NUM2yX

Aug 22, 2019 · 2 shares · 433 followers View post →
tranquility base
@reddoggy1 · X

RT @AstroBioProf: "Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life" See https://t.co/Uvb4NUM2yX

Aug 22, 2019 · 2 shares · 238 followers View post →
Harold Geller
@AstroBioProf · X

"Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life" See https://t.co/Uvb4NUM2yX

Aug 22, 2019 · 1 like · 2 shares · 8,576 followers View post →
Christian Bok
@christianbok · X

They discuss all the means by which we might detect signatures of life on exoplanets (PDF, #xenotext): https://t.co/IJcHh7yCr0

Aug 21, 2019 · 2 likes · 11,776 followers View post →
Robin Hanson
@robinhanson · X

"most detectable [exoplanet] signs of life will likely result from a photosynthetic biosphere. Biosignature gases in Earth-like (N2-H2O-CO2) atmospheres include O2, O3, CH4, C2H6, N2O, CH3Cl, CH3SH, DMS, and DMDS." https://t.co/Nc8DJyiXNY

Aug 21, 2019 · 5 likes · 113,951 followers View post →
I.Enys Untra
@DingoSaar · X

@okaytobesmart Re https://t.co/c3oAkdOyJG wasn't #JamesLovelock the 1st one to suggest checking Martian atmosphere for low entropy to determine whether Mars had life in the 1950s?

Jul 24, 2019 · 837 followers View post →
william Forsman
@bill_forsman · X

Is There Life on Earth? https://t.co/HKBiEcLmmh via @YouTube

Jul 14, 2019 · 36 followers View post →
Harold Geller
@AstroBioProf · X

"Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life" See https://t.co/Uvb4NUM2yX

Jun 27, 2019 · 8,576 followers View post →
Darklou
@darklou91 · X

https://t.co/2pNx3nD5Z2

Jun 9, 2019 · 36 followers View post →
Menelik Morton @planetofthepapes1
@Mmortkeno1 · X

Is There Life on Earth? https://t.co/M81jc6z2SR

May 24, 2019 · 49 followers View post →
Logan Smalley
@LoganSmalley · X

Is There Life on Earth? https://t.co/c0UlDDYBr4 I really enjoyed this thorough exploration of the tools and techniques that astronomers use when scanning the universe for extraterrestrial life. Good stuff @DrJoeHanson and @okaytobesmart!

May 18, 2019 · 3 likes · 2,338 followers View post →
Katie Redden
@kth8su2 · X

Is There Life on Earth? https://t.co/5M4tIabSSI

Apr 1, 2019 · 19 followers View post →
Alienígena do Futuro | Daniel |
@DanielOCL · X

Is There Life on Earth? https://t.co/6MFTJbgXKJ

Mar 19, 2019 · 1,081 followers View post →
G Allen Byram
@GAllenByram · X

If we lived light years from Earth, how would we know there’s life here? https://t.co/COIT3b62gt https://t.co/COIT3b62gt

Feb 22, 2019 · 1,792 followers View post →
Daphne Leeder
@leederbiology · X

RT @APforStudents: In 1990, Voyager I was 6 million km from Earth. It snapped a photo in which our planet looks like a pale pixel. So... i…

Feb 18, 2019 · 4 shares · 106 followers View post →
Heritage Counseling
@yourHHS411 · X

RT @APforStudents: In 1990, Voyager I was 6 million km from Earth. It snapped a photo in which our planet looks like a pale pixel. So... i…

Feb 17, 2019 · 4 shares · 792 followers View post →
Scott Goldstein
@blemtown · X

RT @APforStudents: In 1990, Voyager I was 6 million km from Earth. It snapped a photo in which our planet looks like a pale pixel. So... i…

Feb 17, 2019 · 4 shares · 1,255 followers View post →
AP for Students
@APforStudents · X

In 1990, Voyager I was 6 million km from Earth. It snapped a photo in which our planet looks like a pale pixel. So... if you were an alien looking at Earth from this distance, would you be able to tell there's life on it?

Feb 17, 2019 · 9 likes · 4 shares · 92,762 followers View post →
Lajos Kelemen
@tudom_anyos · X

Honnan sejtjük, hogy egy távoli csillag közül keringő égitest hogyan nézhet ki, ha nem is látjuk a felszínét? https://t.co/g6SHMoK1h4 https://t.co/zvl2yfqL8n

Feb 17, 2019 · 2 likes · 2,590 followers View post →
Mauro Draco Bigatto
@MDraco · X

Is There Life on Earth? https://t.co/XFecjcwdB4

Feb 17, 2019 · 133 followers View post →
Kaijuking30
@Kaijuking30 · X

https://t.co/9CIkeiopdT

Feb 17, 2019 · 3,432 followers View post →
Ivan Kremer
@_Merkre_ · X

https://t.co/Y5Dcm0mHRx

Feb 16, 2019 · 321 followers View post →
FOLLOW ~ asl.bsky.social ~ FOLLOW
@TheAlanShane · X

Is There Life on Earth? https://t.co/SQzHK7BBxw

Feb 15, 2019 · 3,610 followers View post →
Albert Zweistein
@al_zweistein · X

Is There Life on Earth? https://t.co/yrU2WQHyeo via @YouTube "if we had no previous knowledge of whether Earth was home to life, would we actually be able to detect any of our own biosignatures?" "chemical disequilibrium" "vegetation red edge"

Feb 15, 2019 · 205 followers View post →
Sumn
@yoyoyowhatups · X

Is There Life on Earth? https://t.co/BygQojhGeN via @YouTube

Feb 13, 2019 · 29 followers View post →
Drop Ship
@bugstomper2 · X

Is There Life on Earth? https://t.co/p2ak9tjIVx

Feb 13, 2019 · 445 followers View post →
Cecile Braconnier
@braco001 · X

Is There Life on Earth? https://t.co/GRjuGLh8Yv

Feb 12, 2019 · 742 followers View post →
Science-George
@Science_George · X

RT @CosmicKid1598: https://t.co/5x5PTB41nS Via @YouTube by @okaytobesmart with @DrJoeHanson

Feb 12, 2019 · 1 share · 3,633 followers View post →
Cosmic Starstuff ✨ Akash (ஆகாஷ்)
@CosmicKid1598 · X

https://t.co/5x5PTB41nS Via @YouTube by @okaytobesmart with @DrJoeHanson

Feb 12, 2019 · 1 like · 1 share · 898 followers View post →
PBS Digital Studios
@PBSDS · X

RT @okaytobesmart: It's always my goal to make you think after you watch a video. Let's do that today, with a little post-episode CHALLENGE…

Feb 11, 2019 · 2 shares · 28,099 followers View post →
Be Smart
@okaytobesmart · X

It's always my goal to make you think after you watch a video. Let's do that today, with a little post-episode CHALLENGE QUESTION! First, make sure you've watched my new video! https://t.co/ImG4gBRwPb

Feb 11, 2019 · 12 likes · 2 shares · 41,927 followers View post →
MagnaDaRyu
@magnadaryu · X

https://t.co/SHiL7tumAT

Feb 10, 2019 · 203 followers View post →
Phodysssey
@phodyssey · X

Is There Life on Earth? https://t.co/1prXCwlM8q

Feb 10, 2019 · 1 like · 44 followers View post →
Ana Francisca se vinga
@hermitolerigou · X

https://t.co/XuEKxvsJhz

Feb 10, 2019 · 1,172 followers View post →
AJisReal
@ajisreal · X

good morning. https://t.co/SdSZT5bh6O

Feb 10, 2019 · 682 followers View post →
Grizzly's Lab
@uibbs2 · X

I liked a YouTube video https://t.co/lLRtRCunNz Is There Life on Earth?

Feb 9, 2019 · 128 followers View post →
barath_d
@barath_d · X

RT @kryes: C55H72O5N4Mg - Chlorophyll Is there life on Earth? Yes, we know! But how to know it / measure it from Space? https://t.co/AxRej…

Feb 8, 2019 · 7 shares · 64 followers View post →
Humanity above Nation!
@gdelango · X

RT @kryes: C55H72O5N4Mg - Chlorophyll Is there life on Earth? Yes, we know! But how to know it / measure it from Space? https://t.co/AxRej…

Feb 8, 2019 · 7 shares · 5,122 followers View post →
CybrMadHatter
@OCCUPYMARS2025 · X

RT @astrotweeps: Start your day with this excellent video on searching for life in the Universe, @NASAKepler's observations, what signs we…

Feb 8, 2019 · 1 share · 2,247 followers View post →
கரிசகாட்டுக்காரன்
@rainkannan · X

RT @kryes: C55H72O5N4Mg - Chlorophyll Is there life on Earth? Yes, we know! But how to know it / measure it from Space? https://t.co/AxRej…

Feb 8, 2019 · 7 shares · 314 followers View post →
astrotweeps
@astrotweeps · X

Start your day with this excellent video on searching for life in the Universe, @NASAKepler's observations, what signs we look for and much more! https://t.co/uuHEjL9pbr

Feb 8, 2019 · 3 likes · 1 share · 9,905 followers View post →
Luca
@SorrisoCattivo · X

Is There Life on Earth? https://t.co/zj8nRzCYIt di @YouTube

Feb 8, 2019 · 142 followers View post →
Charles Ikenna
@CharlesIkenna23 · X

Is There Life on Earth? https://t.co/1DzBGDwejw via @YouTube

Feb 8, 2019 · 3,225 followers View post →
käüfféiy
@kauffeyy · X

RT @kryes: C55H72O5N4Mg - Chlorophyll Is there life on Earth? Yes, we know! But how to know it / measure it from Space? https://t.co/AxRej…

Feb 8, 2019 · 7 shares · 258 followers View post →
புகழ்
@mekalapugazh · X

RT @kryes: C55H72O5N4Mg - Chlorophyll Is there life on Earth? Yes, we know! But how to know it / measure it from Space? https://t.co/AxRej…

Feb 8, 2019 · 7 shares · 52,590 followers View post →
உலகன் (logan)
@vmlog · X

RT @kryes: C55H72O5N4Mg - Chlorophyll Is there life on Earth? Yes, we know! But how to know it / measure it from Space? https://t.co/AxRej…

Feb 8, 2019 · 7 shares · 4,559 followers View post →
KRS | கரச
@kryes · X

C55H72O5N4Mg - Chlorophyll Is there life on Earth? Yes, we know! But how to know it / measure it from Space? https://t.co/AxRejxH8tM

Feb 8, 2019 · 24 likes · 7 shares · 50,576 followers View post →
Life's a Bitch & So Am I (We-I)
@AbandonArts · X

It's ok to be smart Is there life on earth? https://t.co/izqCKcv9E9

Feb 8, 2019 · 17 followers View post →
Michael
@MikesSoSavvy · X

Is There Life on Earth? https://t.co/7zGIslk1Fa via @YouTube @okaytobesmart

Feb 7, 2019 · 682 followers View post →
Orel Fargas
@OrelFargas · X

Is There Life on Earth? https://t.co/M0pJpSrTfQ via @YouTube

Feb 7, 2019 · 194 followers View post →
Kevin Towill
@TowillKevin · X

.@okaytobesmart On your new video posted today you misquoted "6 billion km" as "6 milllion km" about the pale blue dot. https://t.co/c7AQ88vmCV

Feb 7, 2019 · 1 followers View post →
thomas.
@tektiteTV · X

It’s Okay To Be Smart: Is There Life on Earth? https://t.co/Q3awcpY9xn

Feb 7, 2019 · 28 followers View post →
Gary McFarlane
@GaryM · X

Is There Life on Earth? A look at the search for extraterrestrial life on habitable exoplanets: https://t.co/tpJK5Me6Nl via @okaytobesmart #scichat #STEM

Feb 7, 2019 · 4,584 followers View post →
PBS Digital Studios
@PBSDS · X

RT @okaytobesmart: NEW VIDEO! Is there life on Earth and how would we know if we didn’t know that? https://t.co/ImG4gBRwPb

Feb 7, 2019 · 4 shares · 28,099 followers View post →
ضحى
@Dhuha0 · X

هل هناك حياة على الأرض؟ https://t.co/i74usImJa1

Feb 7, 2019 · 35 followers View post →
Uncle Jay - #Cheugy #Cheug, Source of All Wisdom
@mythmanjay · X

Is There Life on Earth? https://t.co/nsER3cBdBt

Feb 7, 2019 · 7,926 followers View post →
KMCsciguy
@kmcsciguy · X

RT @okaytobesmart: NEW VIDEO! Is there life on Earth and how would we know if we didn’t know that? https://t.co/ImG4gBRwPb

Feb 7, 2019 · 4 shares · 65 followers View post →
Mr. Cable
@CableBiologyRHS · X

RT @okaytobesmart: NEW VIDEO! Is there life on Earth and how would we know if we didn’t know that? https://t.co/ImG4gBRwPb

Feb 7, 2019 · 4 shares · 194 followers View post →
Zengineering Podcast
@zengineeringpod · X

Remember, it's okay to be smart! w/ @okaytobesmart & @drjoehanson https://t.co/uUrYOr8VQp

Feb 7, 2019 · 984 followers View post →
POPTOP #science
@poptopitscience · X

Is There Life on Earth? https://t.co/8fdNNOZxfM

Feb 7, 2019 · 24 followers View post →
Arturo Torres Sánchez
@R2D221 · X

RT @okaytobesmart: NEW VIDEO! Is there life on Earth and how would we know if we didn’t know that? https://t.co/ImG4gBRwPb

Feb 7, 2019 · 4 shares · 702 followers View post →
Be Smart
@okaytobesmart · X

NEW VIDEO! Is there life on Earth and how would we know if we didn’t know that? https://t.co/ImG4gBRwPb

Feb 7, 2019 · 16 likes · 4 shares · 41,927 followers View post →
chere100
@chere100 · X

Is There Life on Earth? https://t.co/1D0wpiGSy5 via @YouTube #Science

Feb 7, 2019 · 118 followers View post →
Mary Ann Liebert Inc
@LiebertPub · X

Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life. Read one of the top articles from 2018 for FREE until Jan 21: https://t.co/Bko4T3O5F0 https://t.co/spLcgucu77

Jan 11, 2019 · 4,822 followers View post →
Harold Geller
@AstroBioProf · X

"Exoplanet Biosignatures: A Review of Remotely Detectable Signs of Life" See https://t.co/uA7yvm5N64 https://t.co/B4GrbHkq7m

Jan 7, 2019 · 8,576 followers View post →