Steve Desch
@deschscoveries.bsky.social
Professor of astrophysics / planetary science / meteoritics at Arizona State University.
Because a jet was shooting perpendicular to the comet-Sun direction? Comets always shoot jets out every which way.
Here's a Rosetta image of 67P.
And I see he's back to ejected dust being an alien force field. He's running on fumes even worse than the Juno spacecraft he wants to probejack.
Here's a Rosetta image of 67P.
And I see he's back to ejected dust being an alien force field. He's running on fumes even worse than the Juno spacecraft he wants to probejack.
November 20, 2025 at 6:13 PM
Because a jet was shooting perpendicular to the comet-Sun direction? Comets always shoot jets out every which way.
Here's a Rosetta image of 67P.
And I see he's back to ejected dust being an alien force field. He's running on fumes even worse than the Juno spacecraft he wants to probejack.
Here's a Rosetta image of 67P.
And I see he's back to ejected dust being an alien force field. He's running on fumes even worse than the Juno spacecraft he wants to probejack.
Repost with an iconic fictional band.
November 11, 2025 at 10:09 PM
Repost with an iconic fictional band.
New image of interstellar comet 3I/ATLAS by M. Jäger, G. Rhemann & E. Prosperi.
Avi Loeb's: "Is the network of jets associated with pockets of ice on the surface of a natural cometary nucleus or are they coming from a set of jet thrusters used for navigation of a spacecraft? We do not know."
Avi Loeb's: "Is the network of jets associated with pockets of ice on the surface of a natural cometary nucleus or are they coming from a set of jet thrusters used for navigation of a spacecraft? We do not know."
November 8, 2025 at 6:35 PM
New image of interstellar comet 3I/ATLAS by M. Jäger, G. Rhemann & E. Prosperi.
Avi Loeb's: "Is the network of jets associated with pockets of ice on the surface of a natural cometary nucleus or are they coming from a set of jet thrusters used for navigation of a spacecraft? We do not know."
Avi Loeb's: "Is the network of jets associated with pockets of ice on the surface of a natural cometary nucleus or are they coming from a set of jet thrusters used for navigation of a spacecraft? We do not know."
Sorry it took me so long to grade your August 20 assignment, Avi Loeb. Are you sure you're ready for a class on comets? You might need to learn about things like bow shocks and chemistry.
September 9, 2025 at 7:20 PM
Sorry it took me so long to grade your August 20 assignment, Avi Loeb. Are you sure you're ready for a class on comets? You might need to learn about things like bow shocks and chemistry.
August 26, 2025 at 12:33 AM
Just saw the original Sarris at the MoPop in Seattle!
August 14, 2025 at 9:37 PM
Just saw the original Sarris at the MoPop in Seattle!
I made this sign for a 2016 protest. Found it again recently. More true and relevant than ever.
I support Ukraine.
Trump is a stain.
I support Ukraine.
Trump is a stain.
March 1, 2025 at 10:07 PM
I made this sign for a 2016 protest. Found it again recently. More true and relevant than ever.
I support Ukraine.
Trump is a stain.
I support Ukraine.
Trump is a stain.
On Boxing Day we thank those in service positions. I want to thank the US Postal Service for tirelessly and cheerfully (yes!) delivering my mail. USPS delivers w/o censorship or throttling, even to rural areas no one makes a profit delivering to. Thank you, Post Office employees!
December 26, 2024 at 10:35 PM
On Boxing Day we thank those in service positions. I want to thank the US Postal Service for tirelessly and cheerfully (yes!) delivering my mail. USPS delivers w/o censorship or throttling, even to rural areas no one makes a profit delivering to. Thank you, Post Office employees!
Hi! I’m a Professor of astrophysics at ASU. I use meteorite data to model how stars and planets form. I lead a NASA-funded team to predict the diversity of exoplanet compositions. I work with realice.eco to explore ways to thicken arctic ice. I fight bad science. Let’s karaoke!
November 24, 2024 at 9:17 PM
Hi! I’m a Professor of astrophysics at ASU. I use meteorite data to model how stars and planets form. I lead a NASA-funded team to predict the diversity of exoplanet compositions. I work with realice.eco to explore ways to thicken arctic ice. I fight bad science. Let’s karaoke!
Age yourself with your first computer.
November 18, 2024 at 6:52 AM
Age yourself with your first computer.
My mail-in ballot has been received, the signature on the affidavit envelope checked, and my vote counted! I got a text and I can also check my voter dashboard. Voting in Arizona is the best!!
Got it done early so now I’m going to help others vote.
Got it done early so now I’m going to help others vote.
October 19, 2024 at 5:37 AM
My mail-in ballot has been received, the signature on the affidavit envelope checked, and my vote counted! I got a text and I can also check my voter dashboard. Voting in Arizona is the best!!
Got it done early so now I’m going to help others vote.
Got it done early so now I’m going to help others vote.
Phoenix temperature records.
October 16, 2024 at 5:02 PM
Phoenix temperature records.
Many people have taken better pictures of the aurora tonight, but were your temperatures in the mid-nineties like in Phoenix?! 🌡
October 11, 2024 at 2:53 AM
Many people have taken better pictures of the aurora tonight, but were your temperatures in the mid-nineties like in Phoenix?! 🌡
Age yourself with a movie you saw in the the theaters as a kid.
m.imdb.com/title/tt0072...
m.imdb.com/title/tt0072...
September 1, 2024 at 4:44 AM
Age yourself with a movie you saw in the the theaters as a kid.
m.imdb.com/title/tt0072...
m.imdb.com/title/tt0072...
Really enjoyed our Freedom of Assembly yesterday with 15 to 20 thousand other Arizonans fired up to vote for #HarrisWalz2024 !
August 10, 2024 at 10:58 PM
Really enjoyed our Freedom of Assembly yesterday with 15 to 20 thousand other Arizonans fired up to vote for #HarrisWalz2024 !
Got a few seconds here and there between clouds at Marble Falls TX! Even saw a prominence!
April 8, 2024 at 7:02 PM
Got a few seconds here and there between clouds at Marble Falls TX! Even saw a prominence!