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  #1151  
Old 06-01-2018, 05:31 AM
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Default Re: Drive by science

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dinos
It was at that point Timothy realized the dinosaur had a huge blind spot underneath its neck, right in front of its massive legs.
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  #1152  
Old 06-01-2018, 08:40 PM
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Basically the latest tests have shown thrust in the same direction even when they flipped the drive around, leading to the belief measurements of thrust are related to the orientation to the earths magnetic field and aren't being produced by the drive at all. I should ad that the rig they did this in was pretty complex, not only did it have gimbals to move the drive while under vacuum, they then physically flipped the drive on the platform and did all the tests again.
Good to hear. I've suspected this for a while. You can generate (neglgible) thrust in orbit just by carrying along a magnet, after all. Though I'm uncertain what the mechanism is here, since their testbed is not moving relative to earth's magnetic field.
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  #1153  
Old 06-02-2018, 12:15 AM
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Default Re: Drive by science

From what I understand the measured thrust was so small that they think even with shielding that it's being induced in the systems wiring and equipment by the magnetic field.
Which also doesn't look good for the drive even if it works, that it produces so little thrust that induced currents in shielded equipment could still produce enough noise to eliminate any measured thrust.
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Old 06-08-2018, 04:47 AM
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Default Re: Drive by science

Finally, scientists have found intriguing organic molecules on Mars | Ars Technica
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  #1155  
Old 06-20-2018, 04:31 PM
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Default Re: Drive by science

TIL that there is a star that is older than the universe: the Methuselah star.

It's 14.46 billion years old and the universe is a mere 13.799 billion years old.

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  #1156  
Old 07-05-2018, 01:07 PM
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Default Re: Drive by science

Something Massive Smashed Into Uranus | Physics-Astronomy

:sniggle: title is not entirely correct. It's just that some simulations have shown that a body 1 - 3 Earths in mass could account for Uranus's unusual rotational axis and other characteristics.
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  #1157  
Old 07-18-2018, 10:26 AM
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Old 07-19-2018, 01:40 AM
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  #1159  
Old 07-19-2018, 01:00 PM
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Default Re: Drive by science

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Originally Posted by JoeP View Post
TIL that there is a star that is older than the universe: the Methuselah star.

It's 14.46 billion years old and the universe is a mere 13.799 billion years old.

This a really good lesson in why we should only ever quote our measurements with error bars!
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  #1160  
Old 07-23-2018, 10:30 AM
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  #1161  
Old 07-25-2018, 10:49 AM
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Default Re: Drive by science

Some great nerdity about adaptive optics in astronomy.

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