astronomy

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blarth, w NASA cuts off international climate science support

Not with a bang, but a whimper.

acockworkorange, w Astronomers 'looked back in time' and found a double jet shooting from a black hole, twice the width of our Galaxy

Everybody is always looking back in time.

bane_killgrind, w NASA rover discovers liquid water 'ripples' carved into Mars rock — and it could rewrite the Red Planet's history

This is cool

very_well_lost, (edited ) w Cosmic disturbance: The mystery of Titan's shifting orbit

The study suggests that some event within the last 350 million years altered its trajectory, preventing it from settling into a circular orbit.

That’s within the current best estimates for the age of Saturn’s ring system… maybe the same catastrophic event that formed the rings is also responsible for the anomaly in Titan’s orbit?

shadowedcross, w Don’t panic, but an asteroid has a 1.9% chance of hitting Earth in 2032
@shadowedcross@sh.itjust.works avatar
humanspiral, w Astronomers seek global ban on space advertising

This is Barbara Streissan publicity when you had never thought about her for 50 years. We must all agree to a ban to stop China from working on it, while we “debate American freedom”

Earflap, w [Seeking Advice]Amateur Radio Telescope

This redditor is both a ham radio operator, and an actual radio astronomer! Might be willing to answer some of your questions, maybe.

conditional_soup,

I dunno if you meant to link to a sub instead of a user, but that’s what I’m seeing. That sounds awesome! Thanks for sharing!

Earflap,

She’s very popular and I would imagine gets lots of messages. I’m not sure if she would prefer to have you message her directly or post on the subreddit. Either way, Andromeda321 is the real deal. Good luck! Be sure to post your pics here, I bet they’ll be real cool!

conditional_soup,

Awesome, thanks! Don’t hold your breath, though. Right now, this thing is paying for itself, and it’s not much. My first goal is to get a used DSLR so I can take promotional pictures. I know it’s a manually slewed scope, but I’m not trying to take crazy multi-hour exposures, I’m trying to show what people might expect to see IRL, and take promotional shots of people on the class. Then, I’ll probably look at making the radio telescope rig more seriously, hopefully before summer.

kryptonidas, w Public stargazing classes

I live half a world away so I can’t attend but I think it’s a cool concept. I have no idea how long it takes to re-align the scope between takes.

There is definitely some magic in that, I don’t know if you have both scopes, then you can set an automatic up for people that just want to take a quick peek, and use the manual to explain your story.

conditional_soup,

It doesn’t take too long to adjust unless somebody really headbutts the scope, which happens. Typically it’s just slewing targets back into frame because of the Earth’s rotation, which at 110x and a good RACI, is pretty easy. I think it takes maybe 15-20s every third guest to make sure they’ve got a good view (takes a bit longer sometimes if they’ve pushed the focuser in). I’m definitely thinking that a GOTO/PUSH TO modification kit might be in my future, but I’m trying not to spend more money at the moment.

RizzRustbolt, w Supermassive black hole spotted 12.9 billion light-years from Earth — and it's shooting a beam of energy right at us

Oh! That’s why my life is in the toilet!

essteeyou, w Supermassive black hole spotted 12.9 billion light-years from Earth — and it's shooting a beam of energy right at us

Rude!

huskypenguin, w Supermassive black hole spotted 12.9 billion light-years from Earth — and it's shooting a beam of energy right at us

Duck!

showmeyourkizinti, w Astronomers find massive supernova remnant closer than previously thought

Ok so from what I can understand it blew off approximately a million years ago, and now it’s about 8.8k ly away. But where was it in relation to earth when it exploded?

kalkulat, w UK tonight and Xmas eve look like good nights, Jupiter Venus Mars all very easy to see right now
@kalkulat@lemmy.world avatar

I was just out enjoying Jup & Mars … couple hours too late for Ven … maybe it’ll be clear tomaro nite!

sirico,
@sirico@feddit.uk avatar

It’s not where I am sadly, cloudy all night looks like but on the 24th my next clear day but if it’s clear where you are Venus should be visible with the naked eye from about 16:00

threelonmusketeers, w Rapid colonization of a space-returned Ryugu sample by terrestrial microorganisms

“We found aliens! Wait no, it’s actually just us again…”

SynopsisTantilize,

We should just bio-seed a planet just to see what happens. Like really …what’s the worst thing that could happen? (Genuinely asking)

Cause the way I see it, we could very well create a new planet or asteroid or moon with micro life on it. It would be nifty.

XeroxCool,

The worst that could happen in our lifetimes, I would say, is be a total waste of money and resources since no other reachable bodies have atmospheres suitable for Earth-based life. Beyond our lifetimes, and possibly beyond humanity’s existence, that life may be able to survive somewhere but any kind of evolution likely takes millions of years and long-term survivability may not let it see that day

Mbourgon,

Odds are we already have: Mars, Venus both have had landers, and given that the protections from bringing bacteria are similar or worse than this lander, the only reason bacteria would not have survived is due to heating of the landers in atmosphere. IANARocketScientist.

Fortunately, we found this out now, before we drop a red hot lander through the ocean surface of one of the moons of (I can’t remember) which they suspect could have life

mumblerfish, w DESI confirms Einstein's model of space-time, limits alternative explanations

preference of the data for dynamical dark energy

That is a quite weak statement, I presume it implies that this result has not excluded a cosmological constant by a long shot, bacause that would have been huge.

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