Welcome to DU! The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards. Join the community: Create a free account Support DU (and get rid of ads!): Become a Star Member Latest Breaking News Editorials & Other Articles General Discussion The DU Lounge All Forums Issue Forums Culture Forums Alliance Forums Region Forums Support Forums Help & Search

Judi Lynn

(162,336 posts)
Sat Apr 27, 2024, 08:38 AM Apr 2024

NASA discovered a planet twice as big as Earth with a gas that is 'only produced by life'

NASA's James Webb Telescope picked up a 'possible detection' of a molecule which 'on Earth is only produced by life'

Poppy Bilderbeck

Updated 19:00 26 Apr 2024 GMT+1
Published 19:01 26 Apr 2024 GMT+1



Featured Image Credit: Getty Stock Images

An exoplanet has been found by NASA which is '8.6 times' as big as Earth with a gas present that's produced mainly by life.

NASA's James Webb Space Telescope was launched on 25 2021 on an Ariane 5 rocket from Europe's Spaceport in French Guiana in South America and last year, it made a very exciting discovery.

The planet
An exoplanet called K2-18 b - also known as EPIC 201912552 b - orbits the red dwarf K2-18 in what NASA says is a 'habitable zone'.

It's located 124 light years away from earth and is around 2.6 times the radius of Earth and 8.6 times the mass of Earth.

It was first discovered by NASA's Kepler space telescope which launched in 2009, however, during the Webb Telescope's mission, the planet's atmosphere was looked into more closely.

The findings
Last year, it was discovered K2-18b has a 'presence of carbon-bearing molecules including methane and carbon dioxide' - NASA revealed.

More:
https://www.unilad.com/technology/nasa/nasa-planet-twice-size-earth-methane-gas-398351-20240426

15 replies = new reply since forum marked as read
Highlight: NoneDon't highlight anything 5 newestHighlight 5 most recent replies
NASA discovered a planet twice as big as Earth with a gas that is 'only produced by life' (Original Post) Judi Lynn Apr 2024 OP
That's all well and good but they're not allowed to compete in Earth's Olympics. paleotn Apr 2024 #1
Let's go! dchill Apr 2024 #2
Mine just had a tuneup, hop in let's GO! KS Toronado Apr 2024 #10
Gigantic jellyfish? Arne Apr 2024 #3
You got to wonder Farmer-Rick Apr 2024 #4
The surface gravity would only be about 1.3g muriel_volestrangler Apr 2024 #13
Good to know Farmer-Rick Apr 2024 #14
if nasa starts reciving signals like this ,,, AllaN01Bear Apr 2024 #5
Guess I won't be vacationing on K2-18 b anytime soon. Fla Dem Apr 2024 #6
Never say never. Imagine if we can achieve half the speed of light in the next hundred years ColinC Apr 2024 #11
Yeah, the vast distances of space are Farmer-Rick Apr 2024 #15
This is so cool. Can we send Trump there? Joinfortmill Apr 2024 #7
Works for me. nt SunSeeker Apr 2024 #9
What a place to ponder DFW Apr 2024 #8
Strangely enough, all the planets discovered by the Enterprise crew were Earth-sized. BWdem4life Apr 2024 #12

paleotn

(19,086 posts)
1. That's all well and good but they're not allowed to compete in Earth's Olympics.
Sat Apr 27, 2024, 09:24 AM
Apr 2024

Imagine how strong they are at ~30% higher gravity than earth. And our best would be couch potatoes in their Olympics. Gravity is such a drag

&ab_channel=Engineeringandarchitecture

muriel_volestrangler

(102,396 posts)
13. The surface gravity would only be about 1.3g
Sun Apr 28, 2024, 09:09 AM
Apr 2024

Gravitational force is proportional to the mass, and inversely proportional to the square of the distance (from the centre of mass). So it's 8.6/(2.6*2.6)=1.3 times as strong as our gravity. That's felt by something on a solid surface in a gaseous atmosphere, of course; in water, if you're something that basically floats, it makes no difference.

But it would basically have little effect - things might not be able to grow quite as tall, run as fast, and so on (limits on what stresses legs can stand before they break too often, that kind of thing). If they had a different chemistry (eg not calcium-based bones) it might make more of a difference.

Fla Dem

(25,629 posts)
6. Guess I won't be vacationing on K2-18 b anytime soon.
Sat Apr 27, 2024, 11:11 AM
Apr 2024

K2-18 b is located 124 light-year from earth. One (1) light year is about 6 trillion US (statute) miles.

How many years is a light-year?
What Is a Light-Year? | NASA Space Place –
For most space objects, we use light-years to describe their distance. A light-year is the distance light travels in one Earth year. One light-year is about 6 trillion miles (9 trillion km).


So at 124 light years away from earth and one (1) light year is 6 trillion miles, the planet is 744 trillion miles from Earth.

ColinC

(10,528 posts)
11. Never say never. Imagine if we can achieve half the speed of light in the next hundred years
Sat Apr 27, 2024, 11:40 AM
Apr 2024

That would put your visit only about half a millennium away!

DFW

(56,421 posts)
8. What a place to ponder
Sat Apr 27, 2024, 11:23 AM
Apr 2024

A planet making enough methane that it supports twenty billion cows the size of wooly mammoths. The cattle industry is probably in talks with Elon Musk as we speak about how to market all that fresh, cheap organic beef here on earth. With all the methane (speculating on that), no one will have to worry about fueling the trip home—as long as the local Navi don’t mind sharing their food source.

BWdem4life

(2,457 posts)
12. Strangely enough, all the planets discovered by the Enterprise crew were Earth-sized.
Sat Apr 27, 2024, 03:27 PM
Apr 2024

With a breathable atmosphere. Where are all those ones?

Latest Discussions»Culture Forums»Science»NASA discovered a planet ...