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U
Unclear Engineer
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Feb 7, 2022
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Yesterday at 10:26 PM
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U
Unclear Engineer
replied to the thread
Bullet-fast moon rocks carved 2 lunar gorges deeper than the Grand Canyon
.
A couple of thoughts: First, the velocities stated in the article don't seem particularly high, to me. The muzzle velocity of a...
Yesterday at 10:26 PM
U
Unclear Engineer
replied to the thread
How much did SpaceX's Starship Flight 7 explosion pollute the atmosphere?
.
m4n8tpr8b seems to have a lot of insider info. But, this is the Internet, where everyone "is an expert" and not necessarily credible...
Yesterday at 7:14 PM
U
Unclear Engineer
reacted to
ChrisA's post
in the thread
Trump wants the US to land astronauts on Mars soon. Could it happen by 2029?
with
Like
.
The big problem with the 2029 date is the Earth-to-Mars launch windows. No matter how much money you have, you can only launch to Mars...
Monday at 6:32 PM
U
Unclear Engineer
replied to the thread
How much did SpaceX's Starship Flight 7 explosion pollute the atmosphere?
.
I reread the article and my own critical comment, and stand by my comment. Part of the problem is, as I already posted, the headline...
Monday at 10:14 AM
U
Unclear Engineer
replied to the thread
Space mining company AstroForge identifies asteroid target for Odin launch next month
.
Making actual mining a commercially viable enterprise seems pretty remote, at this time. But getting a representative sample of...
Sunday at 4:29 PM
U
Unclear Engineer
replied to the thread
Space mining company AstroForge identifies asteroid target for Odin launch next month
.
It would be nice to get a sample of a real "metallic" asteroid, especially if it is really a fragment of the core of a demolished...
Sunday at 1:45 PM
U
Unclear Engineer
replied to the thread
How much did SpaceX's Starship Flight 7 explosion pollute the atmosphere?
.
So, the basic answer to the headline question is "We don't know." And, while there is some reason to consider the effects of large...
Sunday at 1:35 PM
U
Unclear Engineer
replied to the thread
20 jaw-dropping places on Earth that look like an alien planet
.
Thanks for the interesting pictures. It is interesting that over half of these "other world" photos involved liquid water, in the...
Saturday at 7:58 PM
U
Unclear Engineer
replied to the thread
When is an asteroid not an asteroid? When it's Elon Musk's Tesla Roadster, it turns out.
.
So, what is the probability that "Starman" will "drive" Elon's roadster into Earth at some point in the future? And, would it be...
Saturday at 5:49 PM
U
Unclear Engineer
replied to the thread
What are boson stars — and what do they have to do with dark matter?
.
I think the theory goes the other way - the mass of matter is (mainly) due to the energy in the bosons in the nucleus of atoms holding...
Thursday at 12:35 PM
U
Unclear Engineer
replied to the thread
What are boson stars — and what do they have to do with dark matter?
.
Whoknows, try this link: https://profoundphysics.com/if-photons-have-no-mass-how-can-they-have-momentum/ Experimentally, we know that...
Thursday at 8:56 AM
U
Unclear Engineer
replied to the thread
Astronomers discover 196-foot asteroid with 1-in-83 chance of hitting Earth in 2032
.
I guess it is still to early to talk about "keyholes" in the orbit calculations. Those are places where a "miss" still changes the...
Jan 29, 2025
U
Unclear Engineer
reacted to
Hevach's post
in the thread
Trump asks Elon Musk to return 2 Starliner astronauts from the ISS for NASA—but they already have a SpaceX ride home
with
Like
.
This is the fault of the mainstream (and even a lot of science and space media who should know better) calling these two trapped and...
Jan 29, 2025
U
Unclear Engineer
replied to the thread
Boom Supersonic XB-1 jet breaks sound barrier on historic test flight (video)
.
When I was in Montana back in the 1960s. the military jets would hit us with a REALLY LOUD sonic boom every few days. Humans would...
Jan 28, 2025
U
Unclear Engineer
replied to the thread
Boom Supersonic XB-1 jet breaks sound barrier on historic test flight (video)
.
This test aircraft has a long needle nose, plus other necessary shape features (e.g., engine air intake structures) carefully configured...
Jan 28, 2025
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