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C
ChrisA
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ChrisA
replied to the thread
Negative Mass exists, Newton's Laws opposite
.
You see a flat disk that is not perpendicular to our line of sight. The disk would appear to have an elliptical or "arched" shape...
Thursday at 1:48 PM
C
ChrisA
replied to the thread
Spooky fireball blazes across Lake Erie a week before Halloween (video)
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So what can we know about the size and composition of this object from its brightness and color?
Thursday at 1:12 PM
C
ChrisA
replied to the thread
Blowing up: Inflatable space habitats could be key to exploring the solar system
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I think the gas can be recycled. Air is mostly nitrogen (78%, I think). So they use liquidifed air to remove the dust and then...
Tuesday at 4:03 PM
C
ChrisA
replied to the thread
Blowing up: Inflatable space habitats could be key to exploring the solar system
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Clearly, they do not need to be flexible. But if they are, then more "stuff" can be launched in one rocket, The volume of payload...
Tuesday at 2:16 PM
C
ChrisA
replied to the thread
NASA at a crossroads:' Budget woes, aging infrastructure and hard choices ahead
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NASA is building payloads to put on top os SpaceX rockets. The payloads are the hard and expensive part. For example, an...
Tuesday at 1:01 PM
C
ChrisA
replied to the thread
Mars Habitat Construction: Grow the materials needed on Mars!
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If you are looking to reduce the cost you first have to have a very good cost model that adds up the cost of all the parts you need...
Oct 18, 2024
C
ChrisA
replied to the thread
SETI tests new alien-hunting strategy, but TRAPPIST-1 planets remain silent
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We are actually learning quite a lot from SETI. We now know there is no galactic Internet-like radio network. We know that no one is...
Oct 18, 2024
C
ChrisA
replied to the thread
SpaceX catches giant Starship booster during historic Flight 5 rocket launch and landing (video)
.
We hear this argument a lot. But what if you send people to Mars and want to provide them with electric power? Solar pannels don't...
Oct 14, 2024
C
ChrisA
replied to the thread
SpaceX catches giant Starship booster during historic Flight 5 rocket launch and landing (video)
.
Catching the booster in mid-air is impressive but I knew it would work after Musk said that the flight four booster landed in the ocean...
Oct 14, 2024
C
ChrisA
replied to the thread
SpaceX will start launching Starships to Mars in 2026, Elon Musk says
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Elons estimate of "The price of a house" was done assuming the best possible case where the Starship is already built and will be reused...
Sep 14, 2024
C
ChrisA
replied to the thread
SpaceX will start launching Starships to Mars in 2026, Elon Musk says
.
No, Starship has some huge problems. #1. There is no way to abort a launch, If anything goes wrong everyone dies. It will be really...
Sep 13, 2024
C
ChrisA
replied to the thread
How SpaceX built a new spacesuit for Polaris Dawn's private spacewalk (video)
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So apparently these new suits are now demonstrated and tested for exposure to space of the upper body for about 10 minutes. This is a...
Sep 13, 2024
C
ChrisA
replied to the thread
SpaceX will start launching Starships to Mars in 2026, Elon Musk says
.
Yes, predictions are hard to get right the farther into the future you try to predict. So let's keep it to this decade... Notice...
Sep 12, 2024
C
ChrisA
replied to the thread
SpaceX's Starship will go interstellar someday, Elon Musk says
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I don't think even Elon Musk thinks humans will be traveling to other star systems. We don't live long enough to survive even 10% of...
Sep 11, 2024
C
ChrisA
replied to the thread
SpaceX will start launching Starships to Mars in 2026, Elon Musk says
.
The above is correct but does not apply to Musk's plan to use Starship. In the far future, we might use a specialized and faster crew...
Sep 11, 2024
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