astronomy

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KISSmyOSFeddit, (edited ) w Planet Nine: Is the search for this elusive world nearly over?

BAH GOD IT’S PLUTO WITH A STEEL CHAIR!
HE’S CLEARING HIS ORBIT!

downpunxx, w The Hubble Space Telescope has lost a majority of its gyroscopes

ground control to major tom, your circuits dead, there's something wrong, can you hear me major tom

XTL,

We can’t really say that we’re

Surprised

It’s a shame

There’s always something that gets compromised

Daxtron2, w Webb captures iconic Horsehead Nebula in unprecedented detail

I always love seeing the telltale Webb diffraction spikes. Great new pictures.

Voroxpete, w Hundreds of black 'spiders' spotted in mysterious 'Inca City' on Mars in new satellite photos

“Ziggy played guitar…”

Etterra, w Hundreds of black 'spiders' spotted in mysterious 'Inca City' on Mars in new satellite photos

That’s a confusing headline. Let’s make it better:

Mars Spiders Swarm Inca City!

umbrella, w NASA officially greenlights $3.35 billion mission to Saturn’s moon Titan
@umbrella@lemmy.ml avatar

that sounds very cheap in the grand scheme of things. imagine if we didnt spend so much with wars.

SoleInvictus,

Seriously. The United States just sent nearly $60B to Ukraine. Nearly 18 times more than this. If humans weren’t so intent on fighting with each other and instead spent that time, energy, and resources on advancing as a connected society, we could do amazing things. Instead, we’re barreling into the future as predicted by RoboCop.

DoctorWhookah,

I’ll buy that for a dollar!

JohnDClay,

You can’t just cut keeping tyrants at bay though. I totally agree starting a war is stupid, but defending against invasion definitely isn’t. And it prevents future wars from starting or spreading. So as cool as it would be to invest trillions into space exploration, we can’t just leave Ukraine out to dry.

SoleInvictus, (edited )

I totally agree with you, I’m all for funding Ukraine’s defense. It’s just my idealist fantasy that everyone one day wakes up and realizes we’re being collectively quite stupid for the benefit of a very small segment of the population and we could do so much more if we cut them out.

Zikeji, w After 30 years, I'm finally going to see a total solar eclipse. Also, Potato World is a thing.
@Zikeji@programming.dev avatar

I happened to be able to see the 2017 one and it was so impactful I saved the date and made sure I’d make it happen. Cut forward 7 years and here I am with most of my immediate family (I have 6 siblings so having most is impressive).

It is an experience that can’t be captured by any form of digital or physical media and my only way to describe it is - it’s the closest thing to magic I’ve ever experienced.

I plan on saving up and going overseas for one as well.

ivanafterall, w Rainbow-like pattern found on planet outside solar system

Yeah, look directly at the giant flesh space eyeball, smart.

boredtortoise, w [Eric Berger] Seeing this eclipse is probably the highest-reward, lowest-effort thing one can do in life

Wanted to but the flight prices were too much

ODuffer, w Northern lights predicted in US and UK on Monday night in wake of solar storms
@ODuffer@lemmy.world avatar

Complete cloud coverage predicted in UK, as per usual, until perhaps June.

FreudianCafe, w The US government seems serious about developing a lunar economy

Cant wait to see how they will use moon real estate to produce a new kind of homeless people

Twinkletoes, w Study: Dark matter does not exist and the universe is 27 billion years old

Tired light makes a lot of sense to me 🥱

muhyb, w James Webb telescope spots potential conditions for life on 2 dwarf planets beyond Neptune

Isn’t that too far for habitable zone?

whotookkarl,
@whotookkarl@lemmy.world avatar

That’s the zone for liquid water at the planet surface. There’s other sources of heat; gravitational pressure, geothermal vents from plate tectonics, etc. In this case they’re looking for methane with a chemical signature that indicates it comes from geothermal activity as opposed to other processes that generate methane.

SpaceNoodle,

Space cows?

ArmoredThirteen,
muhyb,

I see. Thanks for the explanation.

Andrenikous,

Why methane specifically?

whotookkarl,
@whotookkarl@lemmy.world avatar

So that’s also studies by astrobiologists looking at atmospheric methane because we know it can be created in large quantities by metabolism in an organism in addition to non organic processes, and in the atmosphere it reacts to sunlight so it needs to be replaced to stay present in large quantities.

This is something different where they’re looking for chemical signatures, primarily methane, indicating geothermal vents which we’ve seen providing the energy to sustain life on earth at the bottom of the ocean. If abiogenesis requires some non organic processes like sublimation, evaporation, heating up and cooling down, etc to allow a self repeating process to start and continue to hold form until it’s able to use sugars to continue to maintain itself instead of depending on its environment to kick start the life process then you’ll want to look for those phase changes or boundaries like water/atmosphere or extreme heat/cold to provide the gradient that natural process may need like those studied in systems chemistry.

Cap, w Solar eclipse on Mars! Perseverance rover sees Martian moon Phobos cross the sun in epic video
@Cap@kbin.social avatar

I love this line, "...is an asteroid-sized moon orbiting a few thousand miles (or kilometers) above the Martian surface..." A few thousand miles...or kilometers, we don't care, pick your favorite.

Solemn,

A quick search says Phobos orbits 3700 miles, aka 6000km, above the surface of Mars. A few thousand of either is in fact, correct.

dave,
@dave@feddit.uk avatar

If you’re imprecise enough, anything is about half the size of an adult giraffe.

Peppycito,

Which half? The neck half or the leg half?

dave,
@dave@feddit.uk avatar

No, silly, the left half.

Peppycito,

The half that’s left. Got it.

MrCookieRespect, w NASA loses contact with Ingenuity Mars helicopter

:(

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