Recent comments in /f/space
GSte2022 t1_j6551bq wrote
Reply to Why are "metals" more effective at cooling molecular clouds than hydrogen and helium? by Thomas_Bonk
'Metals' (any atom with equal or more than three protons) are heavier then hydrogen or helium. So 'metals' are slower then H or He with the same kinetic energy. That means that over time the heat density becomes less along the expansion vector. This effect spreads the heat over a bigger volume and lowers the heat(energy) density, making that area cooler.
Mother_Nebula904 t1_j6544l3 wrote
Reply to comment by CrimsonWolfSage in If you could instantaneously place a space telescope at any desired distance (LYs), from any planet/galaxy etc., where would it be and what would you be documenting? And for what purpose? by kennyarsen
Maybe everything is moving faster than light at the edge of the universe and we wont see anything at all...
Plus_Cartoonist_3060 t1_j653ciz wrote
Reply to comment by KamikazeArchon in Sending a signal faster than light is time travel? by KingOfTNT10
Interesting I always thought it was true! Do you mind providing a source?
monkee67 OP t1_j651voc wrote
Reply to comment by Chairboy in It’s Not Sci-Fi—NASA Is Funding These Mind-Blowing Projects by monkee67
point taken.
Uninvalidated t1_j650w3z wrote
Reply to comment by Captain_Quidnunc in About Black Holes Being Round... Maybe Not by JustAPerspective
Could you source us up on that one please?
Chairboy t1_j650r8l wrote
Reply to comment by monkee67 in It’s Not Sci-Fi—NASA Is Funding These Mind-Blowing Projects by monkee67
That's... almost correct? NASA has limited decision-making power over what research gets funded. Congress makes those decisions and outside of some small projects that can be funded through programs that give them flexibility, NASA does not really typically choose-choose what to research.
They're a great government agency and they enable cool things, but... their decision powers are pretty tightly regulated and controled.
Blazin_Rathalos t1_j64zyiq wrote
Reply to comment by Sygma_stage5 in It’s Not Sci-Fi—NASA Is Funding These Mind-Blowing Projects by monkee67
I know, but they were snarkily correcting the title, so I felt the non-grammatically sound result warranted another snarky correction.
CBalsagna t1_j64y8ij wrote
People would be amazed at what the government (DoD, DoE, NASA, DARPA, etc.) funds. Just look at their statements of need, request for proposal, and broad agency announcements for funding. Source: It's my job to get this money.
Sygma_stage5 t1_j64xg6b wrote
Reply to comment by Blazin_Rathalos in It’s Not Sci-Fi—NASA Is Funding These Mind-Blowing Projects by monkee67
Oh my god what an unsolvable puzzle what could they have possibly meant by that?
Madmarrdegan t1_j64wt79 wrote
Reply to If you could instantaneously place a space telescope at any desired distance (LYs), from any planet/galaxy etc., where would it be and what would you be documenting? And for what purpose? by kennyarsen
Any planet in the Stephans quintet. The night sky must be amazing
LargeHadron_Colander t1_j64wfzh wrote
Reply to comment by Hyperi0us in NASA's Annual Day of Remembrance today, Jan. 26, honors the astronauts who died during the Apollo 1 fire and the Challenger and Columbia space shuttle disasters. by clayt6
Well, happy birthday at least :)
Sevren425 t1_j64wc6j wrote
Reply to NASA's Annual Day of Remembrance today, Jan. 26, honors the astronauts who died during the Apollo 1 fire and the Challenger and Columbia space shuttle disasters. by clayt6
My dad was fishing on Lake Sam Rayburn the morning Columbia broke up on re-entry. It was dark and he didn’t know what was going on at the time but said you could hear things splashing into the water.
therestruth t1_j64w4si wrote
Reply to comment by KTNH8807 in NASA's Annual Day of Remembrance today, Jan. 26, honors the astronauts who died during the Apollo 1 fire and the Challenger and Columbia space shuttle disasters. by clayt6
Yup, that makes sense now. Thanks for taking the time to explain.
[deleted] t1_j64v35s wrote
kennyarsen OP t1_j64v0ig wrote
Reply to comment by OnlyMortal666 in If you could instantaneously place a space telescope at any desired distance (LYs), from any planet/galaxy etc., where would it be and what would you be documenting? And for what purpose? by kennyarsen
I understand. The whole thing is very hypothetical, just like being able to instantaneously place a satellite at any desired distance.
[deleted] t1_j64twrh wrote
Reply to comment by alvinofdiaspar in It’s Not Sci-Fi—NASA Is Funding These Mind-Blowing Projects by monkee67
[removed]
ChrisARippel t1_j64tl9k wrote
Reply to If you could instantaneously place a space telescope at any desired distance (LYs), from any planet/galaxy etc., where would it be and what would you be documenting? And for what purpose? by kennyarsen
I would place it on the edge of the observable universe, 46 billion light years from us. I would point it toward the Milky Way and away from the Milky Way, toward that part the universe we cannot observe.
OnlyMortal666 t1_j64tiqy wrote
Reply to comment by kennyarsen in If you could instantaneously place a space telescope at any desired distance (LYs), from any planet/galaxy etc., where would it be and what would you be documenting? And for what purpose? by kennyarsen
Well, anywhere other than low Earth orbit isn’t instant. Even that has latency.
If “magic UDP” existed, I’d still put it in Alpha Centauri. Results of the survey may well drive us to go there by “some magic” technology.
ColShvotz t1_j64svar wrote
Reply to comment by shotsfired3841 in NASA's Annual Day of Remembrance today, Jan. 26, honors the astronauts who died during the Apollo 1 fire and the Challenger and Columbia space shuttle disasters. by clayt6
Thank you for sharing this.
Intelligent_idiot-_- t1_j64stje wrote
Reply to If you could instantaneously place a space telescope at any desired distance (LYs), from any planet/galaxy etc., where would it be and what would you be documenting? And for what purpose? by kennyarsen
A few thousand ly above the Milky Way so that it can see the great attractor
kennyarsen OP t1_j64smcv wrote
Reply to comment by OnlyMortal666 in If you could instantaneously place a space telescope at any desired distance (LYs), from any planet/galaxy etc., where would it be and what would you be documenting? And for what purpose? by kennyarsen
I meant to include instantaneous data transmission, in addition to satellite placement*
OnlyMortal666 t1_j64s3td wrote
Reply to If you could instantaneously place a space telescope at any desired distance (LYs), from any planet/galaxy etc., where would it be and what would you be documenting? And for what purpose? by kennyarsen
The Alpha Centauri system.
Admittedly, comms (if possible at all) would have somewhat of a latency but the resultant images and other measurements would be of huge interest.
Varsect t1_j64qg42 wrote
Reply to comment by LincolnsVengeance in Sending a signal faster than light is time travel? by KingOfTNT10
Yeah. The fantasy of leaving the local group is basically not realistic and by the time we do learn to do so most of the observable universe will be concentrated almost solely on the edges of the Virgo cluster around Laniakea.
codesnik t1_j656mfa wrote
Reply to comment by LitLitten in Mycotecture — the use of mushrooms and other fungal substances for architectural purposes — could be key to building affordable, fire-resistant, insulated habitats on the Moon and Mars. NASA aims to experiment with the technique on the Moon in 2025. by clayt6
electrostatically, you probably mean? I have no idea, but I'd think that charging their surface with the same sign would work.