astronomy

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marduk, w I made a custom TRMNL plugin to tell me whether it’s worth taking the telescope up!

This looks great!

galacticwaffle, w TESS finds three Earth-sized exoplanets orbiting binary stars - NASASpaceFlight.com

Nice find, and I love that people are finally pushing TESS data with new pipelines like SHERLOCK, but let’s not pretend this is a tidy three-planet slam dunk. The team confirms two transiting Earth-sized planets, the third is still a candidate. Headlines shouting “three Earth-sized” are doing a disservice to the work and to readers who assume confirmed means nailed down.

This is interesting for dynamics though, a binary with planets transiting both stars is rare and tells us something about formation and stability in tight binaries. Still, these are ultra-short period worlds around red dwarfs (2–3.5 day orbits), probably tidally locked, and we have zero masses yet. TESS pixels are big, so ground-based follow-up and precision near-IR RVs or high-res imaging are essential before we start talking about any Earth-like implications.

So yeah, cool system and worth chasing, but chill on the clickbait. Follow-up observations will be the real test, not reprocessed light curves alone.

slothrop,
@slothrop@lemmy.ca avatar

ai slop bot

Pronell, w Exoplanets that cling too tightly to their stars trigger their own doom: 'This is a completely new phenomenon'

This is phrased like the planets have some choice. It’s weird.

ExotiqueMatter, w Milky Way may not be destroyed in galactic smash-up after all
@ExotiqueMatter@lemmygrad.ml avatar

What do you mean after all? Wasn’t it the consensus since forever that there was basically 0 chance of anything actually colliding because galaxies are mostly empty space? I’m pretty sure I read about that when I was a child.

MonkderVierte, w New dwarf planet spotted at the edge of the solar system

How do Sedna and that new one have a stable orbit? Are they that fast, to be able to compensate the movement of Pluto?

Delta_V, w "Big surprise": astronomers find planet in perpendicular orbit around pair of stars

I wonder if its a product of colliding galaxies?

keepthepace, w [Eric Berger] Tuesday Telescope: A rare glimpse of one of the smallest known moons

What I like about this image is that this is probably the biggest object that I can compare to something I know, that I can “comprehend”. With 6 km wide, it is about the same size as Grenoble, a city I have seen from above while hiking. I can understand how far the picture looks from it, how small a human would be on it

Agent641, w [Eric Berger] Tuesday Telescope: A rare glimpse of one of the smallest known moons

I actually think about Deimos a lot

threelonmusketeers,

In what context?

5714, w Half of the universe's hydrogen gas, long unaccounted for, has been found

Astronomical bookkeeping 🥴

Hydrogen alienation is a crime.

otter, w Neutron Stars Hint at Another Dimension

Uh…

JoShmoe,

They’re all dead now btw.

otter,

I mean, so are we, but who’s got time for that? 😅🤷🏼‍♂️

Frenchys_prospecting, w Crew arrives at International Space Station to replace astronauts stranded for 9 months

Click bait title is click bait

RizzRustbolt, w Confirmed at Last: Barnard's Star Hosts Four Tiny Planets

And we’ve made our first step towards the Time Tombs.

Wahots,

Late stage Kassad needs to get his ass to Earth, we need him.

remotelove, w Juno reveals dozens of lava lakes on Jupiter’s moon Io
@remotelove@lemmy.ca avatar

Factorio players rejoice.

Fourth, w Friday Night Stargazing 2025-03-07
@Fourth@mander.xyz avatar

I biked out to a park yesterday with my big binoculars but I’m still waiting for my tripod to show up so I just checked out the moon some. Thanks for posting.

conditional_soup,

The Pleiades and Hyades should still be fairly high in the sky, and make great targets for binoculars. I’m also VERY partial to the little beehive cluster in Canis Major (go to the first barely visible star down from sirius, along the dog’s spine, and move directly right from there). If they’re strong enough, the Orion Nebula also makes a great target. The regular beehive cluster is alright; it can be tricky in the city, but you should juuuust be able to see what kinda looks like a faint, blurry star just left of the angle of you make a right angle between Pollux and Procyon. There’s also a few binary stars that make good targets right now. You should be able to split the first bright star out from the cup in the handle of the big dipper into three stars.

Fourth,
@Fourth@mander.xyz avatar

Appreciate it, looking forward to future posts from you.

Rhaedas, w NASA Shuts Off Voyager Science Instrument, More Power Cuts Ahead to Keep Both Probes Going
@Rhaedas@fedia.io avatar

Flyby: The Interplanetary Odyssey of Voyager 2 - Joel Davis (1987)

Lots of behind the scenes stuff of innovation, discovery, and making adjustments for things that went wrong.

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