Unclear Engineer's latest activity
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UUnclear 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... -
UUnclear 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...
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UUnclear 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...
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UUnclear 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...
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UUnclear 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...
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UUnclear 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...
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UUnclear 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...
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UUnclear 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...
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UUnclear 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...
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UUnclear 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...
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UUnclear 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...
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UUnclear 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...
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UUnclear 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...
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UUnclear Engineer replied to the thread Newly discovered super-Earth orbits in and out of its star's habitable zone. Could life survive its extreme climate?.A few comments and questions: 1. The article states both "The planet provides a brilliant target for the next generation of...
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UUnclear Engineer replied to the thread Boom Supersonic XB-1 jet breaks sound barrier on historic test flight (video).So what was its supersonic atmospheric shock wave like? Did it go "BOOM" or "bump"?
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