this post was submitted on 22 Jul 2026
65 points (100.0% liked)

science

28051 readers
578 users here now

A community to post scientific articles, news, and civil discussion.

dart board;; science bs

rule #1: be kind

lemmy.world rules

founded 3 years ago
MODERATORS
 

For the first time, scientists have found a rocky planet with an atmosphere orbiting in a star’s habitable zone. Researchers from Harvard University say the Earth-like world has conditions similar to those on Earth.

The exoplanet, LHS 1140 b, is 48 light-years from Earth. It orbits a red dwarf star at a distance close enough for water to remain liquid, but far enough away that it would not boil.

top 13 comments
sorted by: hot top controversial new old
[–] crazycraw@crazypeople.online 6 points 1 hour ago

amaze amaze amaze

[–] thenextguy@sh.itjust.works 1 points 37 minutes ago* (last edited 36 minutes ago)

Shouldn't the atmosphere be, you know, around the planet. And not 48 light-years away.

Alt: "How the atmosphere got 48 ly from the planet I'll never know." - Groucho

[–] ThePowerOfGeek@lemmy.world 15 points 2 hours ago (3 children)

Very cool discovery. But just to temper any overly excited reactions...

Whether the atmosphere could support life remains unknown.

Also LHS 1140 b is tidally locked to its red dwarf Star, which means one side of it is constantly facing the star and the other side is always saving away from the star. So the fat side will be very, very cold. While the doesn't rule out the possibilities of life or a breathable atmosphere, it does complicate all that.

[–] dharmacurious@slrpnk.net 1 points 6 minutes ago

So the fat side will be very, very cold

Well, that's why it has all that blubber! To keep it warm.

[–] artifex@piefed.social 11 points 2 hours ago

True, but up till now we didn't even know if a tidally locked planet around a red dwarf could even hold an atmosphere (since red dwarfs tend to have much more powerful x-ray flares, and planets sit much closer to them than our G-type sun). So the fact that this one does have lightweight Helium in the atmosphere would seem to significantly increase the odds that there's life elsewhere, since red dwarfs are super common and if there's 1 that can hold an atmosphere, odds are that there are many, many others.

[–] cattywampas@lemmy.world 5 points 2 hours ago (1 children)

But a habitable ring around the twilight portion sounds very cool and world build-y.

[–] andyburke@fedia.io 2 points 1 hour ago (2 children)

Aren't there issues with constant and unsurvivable wind as atmosphere is heated on the sunward side and cold atmo from the leeward rushes in underneath?

[–] Rhaedas@fedia.io 2 points 53 minutes ago

It'd be an interesting environment. What if the atmosphere was thin so the winds were fast, but not strong? Lots of variables to consider, and I'm sure if life could start, it'd find a niche to live in.

[–] cattywampas@lemmy.world 1 points 49 minutes ago

It's not unsurvivable if the organisms there have evolved to survive it.

[–] homesweethomeMrL@lemmy.world 6 points 2 hours ago

ExxonMobil announced plans to destroy the planet a few minutes later

[–] frongt@lemmy.zip 5 points 2 hours ago (1 children)

Researchers are not yet able to determine what the atmosphere is made of.

Cherubim and his team determined that helium is escaping from the exoplanet’s upper atmosphere.

So don't hold your breath waiting to find out if there's any sign of life.

[–] SkaveRat@discuss.tchncs.de 5 points 2 hours ago

but do hold your breath if you somehow end up there

[–] EnsignWashout@startrek.website 5 points 2 hours ago

But is i anything like Earth? That's what I want to know.