Recent comments in /f/space
[deleted] t1_j28844h wrote
Reply to comment by space-ModTeam in What if an object crosses an event horizon of a black hole... by Cthaeh420
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glaviouse t1_j287y8v wrote
Reply to comment by nova9001 in China reveals ambitious plans for Asia's largest optical telescope | The new telescope will have an aperture of 19.7 feet (6 meters) by 2024 while its mirror will be expanded to 26.2 feet (8 m) by 2030. by chrisdh79
maybe, it's time for USA to integrate the world and to fully switch to SI...
jh989 t1_j287tkq wrote
Reply to comment by illessen in What if an object crosses an event horizon of a black hole... by Cthaeh420
Tbh that's not nearly enough rabbit hole for me, I need "dmt is in every living thing and understanding it is understanding the simulation" level rabbit hole.
space-ModTeam t1_j287ibu wrote
Reply to Shooting Start or??? by Responsible_Ad_3532
Hello u/Responsible_Ad_3532, your submission "Shooting Start or???" has been removed from r/space because:
- Such questions should be asked in the "All space questions" thread stickied at the top of the sub.
Please read the rules in the sidebar and check r/space for duplicate submissions before posting. If you have any questions about this removal please message the r/space moderators. Thank you.
space-ModTeam t1_j287hpa wrote
Hello u/AnOriginalMan405, your submission "Time dilation and death to black holes" has been removed from r/space because:
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space-ModTeam t1_j287h8f wrote
Hello u/Jebusfreek666, your submission "Why can't we observe the formation of a black hole?" has been removed from r/space because:
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space-ModTeam t1_j287g80 wrote
Reply to If you could observe an object in space while traveling towards it from earth at light speed, would the object appear to be in “fast forward”? by fatandlean
Hello u/fatandlean, your submission "If you could observe an object in space while traveling towards it from earth at light speed, would the object appear to be in “fast forward”?" has been removed from r/space because:
- Such questions should be asked in the "All space questions" thread stickied at the top of the sub.
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marketrent OP t1_j2877vh wrote
Reply to SpaceX launches Israeli reconnaissance satellite and lands rocket, marking 61st and final flight of 2022 by marketrent
Excerpt:
>A SpaceX Falcon 9 rocket launched the Israeli Earth-imaging satellite EROS C-3 into orbit from Vandenberg Space Force Base in California late Thursday night (Dec. 29), releasing the payload into orbit about 15 minutes after leaving Earth.
>Liftoff occurred at 11:38 p.m. PST at the launch site (2:38 a.m. EST/0738 GMT), with the Falcon 9's first stage returning to land at a nearby SpaceX pad about 8 minutes into the flight.
>"This is our 61st and final SpaceX launch of 2022," Jesse Anderson, SpaceX's production and engineering manager, said during a live webcast.
>The EROS C-3 launch also marked SpaceX's second launch in as many days.
>On Wednesday (Dec. 28), the company launched its first Gen2 Starlink internet satellites from Cape Canaveral Space Force Base in Florida, delivering 54 of the next-generation Starlinks into orbit.
Elizabeth Howell, 29 December 2022, Space.com (Future plc)
pestapokalypse t1_j2877oh wrote
Reply to comment by cubnextdoor in What if an object crosses an event horizon of a black hole... by Cthaeh420
Depends on the size of the black hole. A stellar mass black hole will spaghettify basically anything that gets close to it, but a supermassive black hole doesn’t have strong enough surface tidal forces.
pestapokalypse t1_j286zc5 wrote
Reply to comment by LeMeowMew in What if an object crosses an event horizon of a black hole... by Cthaeh420
In a supermassive black hole, the tidal forces at the event horizon would actually be relatively weak compared to stellar mass black holes, so it would potentially be feasible to cross the event horizon without being ripped to shreds or spaghettified.
414A44 t1_j286w4j wrote
Reply to Shooting Start or??? by Responsible_Ad_3532
Can't believe nobody's asked: did it disappear mid-flight or carry on past the horizon? If the former, it's definitely a shooting star.
space-ModTeam t1_j286v1x wrote
Hello u/Cthaeh420, your submission "What if an object crosses an event horizon of a black hole..." has been removed from r/space because:
- Such questions should be asked in the "All space questions" thread stickied at the top of the sub.
Please read the rules in the sidebar and check r/space for duplicate submissions before posting. If you have any questions about this removal please message the r/space moderators. Thank you.
[deleted] t1_j286gfm wrote
Reply to comment by s1ngular1ty2 in Time dilation and death to black holes by AnOriginalMan405
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LeMeowMew t1_j286f29 wrote
Reply to comment by gameboy1001 in What if an object crosses an event horizon of a black hole... by Cthaeh420
theoretically assuming the forces dont rip you to shreds, falling into a black hole will be a one way trip to when hawking radiation blows it apart
space-ModTeam t1_j286crz wrote
Hello u/PlanktonExotic, your submission "¿es posible que la atmósfera haga de capa protectora para el sol?" has been removed from r/space because:
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Such questions should be asked in the "All space questions" thread stickied at the top of the sub.
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Please post in English if you can. We do not have the ressources to moderate discussions in other languages.
Please read the rules in the sidebar and check r/space for duplicate submissions before posting. If you have any questions about this removal please message the r/space moderators. Thank you.
[deleted] t1_j286bif wrote
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illessen t1_j286a2t wrote
Reply to comment by jh989 in What if an object crosses an event horizon of a black hole... by Cthaeh420
Well if you want to go down the rabbit hole. Everything that makes up you was once part of a star.
[deleted] t1_j2867mb wrote
Reply to comment by gameboy1001 in What if an object crosses an event horizon of a black hole... by Cthaeh420
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[deleted] t1_j2867fc wrote
101forgotmypassword t1_j285mje wrote
Reply to If you could observe an object in space while traveling towards it from earth at light speed, would the object appear to be in “fast forward”? by fatandlean
Kind of but no. The frequincy of light would increase beyond visable light. As you speed up reds would turn orange then yellow then white and move to ultra Violet. Sound waves would start to have visible colour as they move up in spectrum until you are traveling so fast there is nothing but the slowest fluctuations that apear as light. Things that take centuries would be happening at frequincies higher than white light itself.
None of this would be possible though but let's say we could. One thing you could have on you ship would be a snap shot capture tool that took a sample shot of the radiation and produce a redshift back to some visible light showing a blurry image like a sudo slow motion camera but even still in the time your ships electrons travel micrometers decades would have passed it would only serve a purpose to ensure that earth still was there.
phantagom t1_j285l7s wrote
Reply to comment by WittyUnwittingly in What is our current "best guess" about how to observers that entered a black hole on opposite sides would look to each other once they crossed the event horizon? by WittyUnwittingly
No, "loss of causality information" and "infinitely blueshifted" is not the same thing.
The event horizon of a black hole acts as a "one-way membrane" that separates the region inside the black hole (the interior) from the region outside (the exterior). Once an object or particle crosses the event horizon, it becomes trapped inside the black hole and cannot escape. This means that, from the perspective of an observer outside the black hole, the interior of the black hole is causally disconnected from the exterior. This means that there is no way for an observer outside the black hole to receive information about what is happening inside the black hole, or to affect events that are occurring inside the black hole. This is what is meant by "loss of causality information."
The phenomenon of an object being infinitely blueshifted as it approaches the event horizon of a black hole is a consequence of the extreme gravitational forces present in the region. more extreme. In this sense, it is possible to say that the object is "infinitely blueshifted" as it approaches the singularity. However, this is not the same thing as a loss of causality information, as the object is not able to transmit any information about its experience to an outside observer once it crosses the event horizon.
The choice of coordinates used to describe a physical system is a matter of convenience, and different choices of coordinates can give rise to different perspectives on the same physical situation. It is generally more useful to choose coordinates that are well-behaved (e.g. that do not diverge or become singular at certain points) and that are adapted to the symmetries of the system (e.g. cylindrical coordinates for a cylindrically symmetric system).
PoppersOfCorn t1_j285it8 wrote
Reply to comment by TheOutlawStarLord in If you could observe an object in space while traveling towards it from earth at light speed, would the object appear to be in “fast forward”? by fatandlean
Yeop very possible.. I never mentioned stopping 🤣
thetotalslacker t1_j2856x3 wrote
It’s stuck in the universe on the other side of the event horizon, just like you’re stuck in this universe and can’t get back to the other side of the black hole you came through at the Big Bang. Everyone who says I’m wrong can’t explain why the math agrees, and the math and physics of a specifically sized black hole roughly matches the math and physics of the observable universe, where anything passing into the black hole across the event horizon would simply speed up past the speed of light and would not be destroyed. You simply have to understand the math of inside a black hole and turn that infinity sideways so that the multiple dimensions of time become the proper multiple dimensions of space and time in the newly formed universe. Seriously, just do the math and say it’s wrong.
PeterServo t1_j2854jr wrote
If only the sky wasn't cloudy 90% of the time.
s1ngular1ty2 t1_j2886rj wrote
Reply to comment by Xethinus in Time dilation and death to black holes by AnOriginalMan405
No man, you fall in and you die. The black hole still is there. Sorry that is how it works.
Time is slowed for you and the black hole. So it will live on far far after it has crushed you into a pulp.
You are confusing reference frames. If your time is slowed, the black hole's time is slowed relative to an outside observer. So you are experiencing the same time. Not sure how it could age more quickly than you or more quickly than the outside observer when it is also experiencing time dilation.