me_too_999
me_too_999 t1_j5wok81 wrote
Reply to comment by ttkciar in NASA to test nuclear thermal rocket engine for the first time in 50 years | CNN by dem676
I still don't see fission powered jets at a commercial airport any time soon.
Maybe on Mars, in fact a fission rocket would good for 2nd stage payloads to the outer planets.
The future is fusion, and probably won't be any nuclear powered craft until then.
me_too_999 t1_j5sex5v wrote
Reply to comment by Adeldor in NASA to test nuclear thermal rocket engine for the first time in 50 years | CNN by dem676
Looks like the deaths were from a separate incident, but here's a link I found.
me_too_999 t1_j5s3x9q wrote
Reply to comment by ttkciar in NASA to test nuclear thermal rocket engine for the first time in 50 years | CNN by dem676
They stopped it because of an accident that caused super criticality, a massive radiation release.
Material, and nuclear science wasn't quite up to the task 50 years ago.
Spez, the deaths were a separate incident.
me_too_999 t1_j1bin7i wrote
Reply to comment by 10yearsnoaccount in Mars' ancient atmosphere may not have had much oxygen after all by pecika
How many inches does UV penetrate in Martian soil?
me_too_999 t1_j1bcnz4 wrote
Reply to comment by zoicyte in Mars' ancient atmosphere may not have had much oxygen after all by pecika
A little solar wind isn't going to kill a bacteria, the perchlorate soil, and freezing temperatures may be a problem.
me_too_999 t1_j1ai6w7 wrote
Reply to comment by zoicyte in Mars' ancient atmosphere may not have had much oxygen after all by pecika
And as far as I know, they could survive a low oxygen environment like present day Mars.
me_too_999 t1_j1ahfyp wrote
Reply to comment by zoicyte in Mars' ancient atmosphere may not have had much oxygen after all by pecika
You are correct. Carboniferous was after.
Still it is believed anearobic life existed before the event.
And even though plants produce their own oxygen, they do fine in a high co2 environment, but I think they need at least a little atmospheric oxygen to grow.
me_too_999 t1_j1a8ldf wrote
This makes sense.
During Earth's Carboniferous period, our atmosphere was low oxygen, and high co2.
The event known as the oxygen catastrophe that gave rise to oxygen dependent life.
Prior to that life certainly existed as it is believed to have contributed to the rising oxygen levels.
me_too_999 t1_j0o2b3x wrote
Reply to comment by eikons in The Reality of Universal Basic Income Future by Prototype47
Yeah, no.
99.99999% of us will sit on the couch, and smoke weed, just like today.
me_too_999 t1_j61a5nc wrote
Reply to What time is it on the Moon? - Satellite navigation systems for lunar settlements will require local atomic clocks. Scientists are working out what time they will keep. by speckz
Doesn't time pass slightly different on the moon?
The clocks will need periodic resyncing to Earth time.