David Grinspoon

“There is nothing new under the sun. But there are new suns.” — Octavia Butler 🧪

NEW PLANET FOUND IN OUR SOLAR SYSTEM!!!! 🧪🔭 www.nsf.gov/news/new-dwa...

NEW PLANET FOUND IN OUR SOLAR SYSTEM!!!! 🧪🔭 www.nsf.gov/news/new-dwa...

So I’m in a band called Durty Neil that only plays relatively obscure Neil Young covers. Here’s a new vid from a porch fest we played a few months ago: youtu.be/a2MPSskaNos?...

So I’m in a band called Durty Neil that only plays relatively obscure Neil Young covers. Here’s a new vid from a porch fest we played a few months ago: youtu.be/a2MPSskaNos?...

JUST POSTED: Today at The NYT we are publishing a major investigation into how President Trump used his executive powers to expose millions of Americans to greater cancer risks. A six month-long investigation built on more than 10,000 pages of FOIA records. Read it www.nytimes.com/2026/10/24/c...

OTD in 1975 a machine from Earth took the first photo ever from the surface of another planet. Venera 9 at Venus. 🧪

OTD in 1975 a machine from Earth took the first photo ever from the surface of another planet. Venera 9 at Venus. 🧪

Republican candidate’s campaign website accidentally publishes AI prompt: “The president is not popular, so all messaging should be focused on local politics and needs." www.yahoo.com/news/politic...

so restricting Ukraine's Starlink was Musk's idea, but after Moscow took advantage he became "alarmed about the possibility of adverse consumer reaction in Europe" to the "night of carnage" and denied responsibility I mean, it sounds like typical Elon

🧵I remember sitting in the audience at a few space conferences and recall the conversations in some of the infamous hospitality suites ( aka hostility suites) back in the late 1980s early 1990s. A thought back then was that the whole space endeavor should be given to the private sector...

BREAKING: A Trump-appointed judge has ruled DHS violated the Due Process Clause of the Fifth Amendment when it removed Ahmed Soliman to Equatorial Guinea and must facilitate his return to the US. prospect.org/2026/10/07/f...

Book of Rules: My band GROOVADELICS covering a Heptones tune a few weeks ago… #reggae GROOVADELICS youtu.be/O9c6aPci6KI?...

Book of Rules: My band GROOVADELICS covering a Heptones tune a few weeks ago… #reggae GROOVADELICS youtu.be/O9c6aPci6KI?...

Oh my. The aurora borealis, seen in ultraviolet light from space. Our planet, putting on a show ✨

We cannot become numb to this. Reporting via CNN

Mark Sykes describes just how much funding is being withheld from NASA's Planetary Research & Analysis programs: blog.planetary-research.org/2026/09/25/r... (With the context of how what Congress has ordered has already been well below what the National Academies recommended.)

Just came across this cool artifact: “Viking Lander Biological Instrument, Life on Mars” matchbox. (“The most complex instrument ever flown “) From a party in Pasadena for first Mars landing in 1976. Handed down to me by the late, great Shirley Arden (Carl Sagan’s long time executive assistant). 🧪

Just came across this cool artifact: “Viking Lander Biological Instrument, Life on Mars” matchbox. (“The most complex instrument ever flown “) From a party in Pasadena for first Mars landing in 1976. Handed down to me by the late, great Shirley Arden (Carl Sagan’s long time executive assistant). 🧪

Wtaf is this question my university just asked me about my project?

EIon Musk’s Wealth 2009: $.6B 2026: $984B Jeff Bezos’s Wealth 2009: $6B 2026: $370B Mark Zuckerberg’s Wealth 2009: $.6B 2026: $256B Federal Minimum Wage 2009: $7.25 2023: $7.25 Billionaire tax rate: 8.2% Worker tax rate: 13% Pay workers. Tax & Abolish Billionaires. Save our economy & country.

Here’s my band GROOVADELICS covering Toots and the Maytals last Saturday: youtu.be/MelRWApaZnM?...

Here’s my band GROOVADELICS covering Toots and the Maytals last Saturday: youtu.be/MelRWApaZnM?...

How do you know? Do you know what makes a mind? Or how it works? Or what happens when we create a sufficiently complex machine that recognizes patterns, connects information and iterates in novel ways? If so, you are the only person on Earth who does.

For one and all who need to hear this, me included

Remember: no judge or jury has found these boats were trafficking drugs. We're simply taking Trump's word for it. He’s unilaterally acting as judge, jury, and executioner.

Fun conversation with @starstryder.space on @cosmoquest.org about searching for life on Mars and elsewhere and the legacy, and fond memories, of the Viking missions. youtu.be/dKrgLRCe9H8?...

It is fascinating to see Jacob Coxon attacked from the left “He’s making it up to boost share values” & the right “He’s making it up to force regulation”. Anyone who doubts AI could cause existential risks lacks imagination. Anyone who thinks they know the level of! risk is overconfident. So…(1/2) 🧪

#Nepal needs $5bn to rebuild from the #floods. Oil giants Exxon, Chevron & Shell made $36.5bn profit in the past quarter alone. The #LossandDamage Fund can provide only up to $20 million in emergency support. Shared thoughts with @stuti.bsky.social on why this is a test for #climatejustice.

Thank you @exploratorium.bsky.social for hosting my talk Thursday on “Shaping Earth’s Future” What a cool museum and great audience. 🙏🏼 🧪

Thank you @exploratorium.bsky.social for hosting my talk Thursday on “Shaping Earth’s Future” What a cool museum and great audience. 🙏🏼 🧪

Not all heroes bear cakes! www.nytimes.com/2026/09/07/w...

There’s no legitimate purpose for ICE to have this information. There are a ton of nefarious ones, though.

Aww the great and powerful Gloria Steinem has died. I’ll never forget hearing her speak when I was a grad student in Tucson, and she asked “Workers of the world, who is doing your laundry?” www.nytimes.com/2026/09/03/u...

47 years ago today the magnificent ringed planet Saturn was visited for the first time by a spacecraft from Earth: NASA’s Pioneer 11. 🧪🔭

I’m doing 2 presentations at Exploratorium in San Fran Thurs 9/3 part of "After Dark: Pale Blue Dot" 7:30 PM “OUR PLANETARY FUTURE: How can we go from just changing Earth to caring for it?" 8:15 "Ask an Astrobiologist Anything" discussion. Hope to see you! www.exploratorium.edu/visit/calend...

I’m doing 2 presentations at Exploratorium in San Fran Thurs 9/3 part of "After Dark: Pale Blue Dot" 7:30 PM “OUR PLANETARY FUTURE: How can we go from just changing Earth to caring for it?" 8:15 "Ask an Astrobiologist Anything" discussion. Hope to see you! www.exploratorium.edu/visit/calend...

There are 2 huge threats to the survival of our democracy. They are related but distinct. Once we rescue our country from the attempts by Trump & his cronies to subvert elections, we will be left with the task of clawing power back from oligarchs & corporations. www.nytimes.com/2026/08/31/u...

It’s odd, and a little disappointing, that @barbmcquade.bsky.social (whom I admire greatly) would assume that everyone is reporting differently from her on this because we must just “believe what we read on social media posts”, when we’re actually reporting on what we see directly on Google Maps.

Early moment of self-reflection: Today in 1966 Lunar Orbiter 1 took this -The first pic of Earth from lunar orbit. 🧪

Early moment of self-reflection: Today in 1966 Lunar Orbiter 1 took this -The first pic of Earth from lunar orbit. 🧪

I wrote about the impending end of U.S. federal funding for archaeology and anthropology in April. August numbers (reported in Nature www.nature.com/articles/d41...) show that no new grants have been awarded this year. www.johnhawks.net/p/us-federal...