Recent comments in /f/space
Ivedefected t1_jdfhirh wrote
Reply to comment by Aquaticulture in So from what I understand Sagittarius a is in the Center of Milky Way. If any planets orbit this black hole would there be time dilation? by EarthInteresting9781
Even more - GPS satellites experience time dilation relative to Earth (both gravitational and kinetic) which they correct for to provide accurate location data.
Anonymous-USA t1_jdfgp5l wrote
Reply to comment by EarthInteresting9781 in So from what I understand Sagittarius a is in the Center of Milky Way. If any planets orbit this black hole would there be time dilation? by EarthInteresting9781
If you had an identical twin on Earth and Uranus, when the one on Earth reaches 70 yrs old, the twin on Uranus will be 1.1 second younger. Not including the time dilation experienced traveling to Uranus, but let’s say we have a transporter to blink us there.
EarthInteresting9781 OP t1_jdfevlk wrote
Reply to comment by Anonymous-USA in So from what I understand Sagittarius a is in the Center of Milky Way. If any planets orbit this black hole would there be time dilation? by EarthInteresting9781
So would you age slower on Uranus versus earth. Or would your body age all the same?
Anonymous-USA t1_jdfem6r wrote
Reply to So from what I understand Sagittarius a is in the Center of Milky Way. If any planets orbit this black hole would there be time dilation? by EarthInteresting9781
There is an ergosphere around every black hole that extends past it’s event horizon. Yes, there would be time dilation, but it would become less extreme exponentially with the distance from the center of gravity.
But time is relative so to any observer on that planet, time would tick normal to them. We experience time dilation on Earth moving around the sun, and the gravity well of the sun too, but the time dilation compared to, say, an observer on Uranus is negligible. For example, time elapses on Uranus 59.99999997 seconds for every 1 minute on Earth.
[deleted] OP t1_jdfe3l4 wrote
Reply to comment by reallyrich999 in I am 27 years old! Am I missing out on being an astronomer? by [deleted]
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[deleted] t1_jdfdysk wrote
[deleted] t1_jdfduuc wrote
CFCYYZ t1_jdfdmd5 wrote
Math and physics skills translate well to astrophysics.
Computational astronomy is also another avenue.
At 27 you are well positioned in age to become expert.
First though, how can you make a living at it and who pays?
Good fortune to you.
RedshiftWarp t1_jdfda8r wrote
Reply to comment by dungisdangit in So from what I understand Sagittarius a is in the Center of Milky Way. If any planets orbit this black hole would there be time dilation? by EarthInteresting9781
It is bizarre to imagine the geometry of that gravity-well extending all the way out here pockmarked with tiny ones from stars and clusters.
ExtonGuy t1_jdfcowv wrote
Reply to So from what I understand Sagittarius a is in the Center of Milky Way. If any planets orbit this black hole would there be time dilation? by EarthInteresting9781
Not a dump question at all. Every day, there are about 10,000 people finding out about Sgr A* for the first time. And that's in just the US.
reallyrich999 t1_jdfcifb wrote
Just be a venture capitalist like me. You make more money and have a greater quality of life, plus with the exponential growth of AI we're living through, it's only a matter of time before positions and titles like astronomer are fully gone.
ExtonGuy t1_jdfce78 wrote
Reply to So from what I understand Sagittarius a is in the Center of Milky Way. If any planets orbit this black hole would there be time dilation? by EarthInteresting9781
Unless you're within 30 or 40 million kilometers of Sgr A*, the time dilation isn't going to be much at all. For comparison, the radius of Mercury's orbit is 58 million km.
[deleted] t1_jdfc7vr wrote
deluchas15 t1_jdfc3jx wrote
I think your chances are pretty high because you are passionate about Astronomy. It can be exciting for you to do it because a lot of us are curious about it. Physics can be exciting too because you can learn how it works. Keep learning.
Dismal-Philosopher-4 t1_jdfbg95 wrote
Reply to comment by piemelaartje in 3D-printed rocket fails just after launch by APnews
No they're right since that's the truth. And investors can pull the plug any second, is the reality of it.
Aquaticulture t1_jdfbfp1 wrote
Reply to comment by cheatme1 in So from what I understand Sagittarius a is in the Center of Milky Way. If any planets orbit this black hole would there be time dilation? by EarthInteresting9781
Time dilation due to gravity has been explored and tested…
TheCriticalAmerican t1_jdfable wrote
Reply to comment by TheGreatestOutdoorz in US tech rules bar UAE moon rover from China’s Chang’e 7 mission by weinsteinjin
So, the way you justify your own perspective is to dismiss everything I say on the grounds that 'This person who thinks differently than me clearly couldn't be an American because it's impossible for any American to think like that!'
Talk about being brainwashed.... The idea that you refuse to entertain the idea that Americans could see evil in their own government and refuse to support its actions speaks more to your propagandized and brainwashed ideology rooted in imperialist hegemony than anything moral or grandiose.
Anyways.... Enjoy your collapsing empire, bank failures, and inflation. I'll continue to live in the happiest country in the world. Cheers, mate!
Ape_Togetha_Strong t1_jdfa31f wrote
Reply to So from what I understand Sagittarius a is in the Center of Milky Way. If any planets orbit this black hole would there be time dilation? by EarthInteresting9781
Yes, there would be time dilation. How much depends on the distance the planet was orbiting. It wouldn't be close to the same amount of time dilation as Miller's planet unless you were somewhere between 1 and 2 meters from the event horizon, which isn't exactly a reasonable orbit for a planet.
TheCriticalAmerican t1_jdf9ooa wrote
Reply to comment by stevesbetting in US tech rules bar UAE moon rover from China’s Chang’e 7 mission by weinsteinjin
Honestly, yeah. That's a great example. The issue I have is that people start trying to justify the actions of the serial killer they are friendly with and start trying to argue which one is worse.
How about we take a minute to stop and reflect that they both are serial killers and have done terrible awful things and let's move forward trying to not kill each other? Idealistic sure, but a better step in the right direction.
dungisdangit t1_jdf8py5 wrote
Reply to So from what I understand Sagittarius a is in the Center of Milky Way. If any planets orbit this black hole would there be time dilation? by EarthInteresting9781
You're on a planet orbiting Sagittarius A btw
cheatme1 t1_jdf8nmv wrote
Reply to So from what I understand Sagittarius a is in the Center of Milky Way. If any planets orbit this black hole would there be time dilation? by EarthInteresting9781
Well it hasn't happened or been explored or tested in any way but these theories make it seem probable everything slows down around a black hole even time.
cjameshuff t1_jdf28us wrote
Reply to comment by pmMeAllofIt in The world's first 3d printed rocket is launching tonight!! by astrofilmsyt
I'm not the one saying it's feasable, reasonable, or even desirable to 3D print 100% of a rocket, that's Relativity.
fencethe900th t1_jdexin6 wrote
Reply to comment by TheGreatestOutdoorz in US tech rules bar UAE moon rover from China’s Chang’e 7 mission by weinsteinjin
So he is. I usually don't check that but I'd guess he's only saying what he is because it's China that's being primarily effected here and he doesn't want to admit they're not a very nice country, government-wise.
[deleted] t1_jdewtw1 wrote
Reply to comment by stevesbetting in US tech rules bar UAE moon rover from China’s Chang’e 7 mission by weinsteinjin
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pmMeAllofIt t1_jdfkd6g wrote
Reply to comment by RedshiftWarp in So from what I understand Sagittarius a is in the Center of Milky Way. If any planets orbit this black hole would there be time dilation? by EarthInteresting9781
It's not really.Were orbiting the center of mass of the whole galaxy, Sagittarius A* just happens to be near there, but if it was to disappear not much would happen out this far.
Sagittarius A* is about 4 million solar masses, but there's possibly about 65 billion solar masses in other stars, then about a trillion solar masses or more in dark matter. We orbit around the center of mass of all of it, and so does the black hole which only makes up about 0.0004% of the total mass(though it could be located right at the barycenter?idk).