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asdfex's user avatar
asdfex
  • Member for 8 years, 7 months
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132 votes
Accepted

How is stacking oranges in 24 dimensions related to receiving and decoding signals from the Voyagers?

86 votes
Accepted

How was New Horizons able to direct data so precisely back to Earth?

66 votes
Accepted

Why does this researcher have a "clear plastic bag" over their head?

51 votes
Accepted

Why exactly do robots freeze? How could we engineer around it?

50 votes

How did the Apollo guidance computers deal with radiation?

42 votes
Accepted

What is that black thing in center of every star in this JWST image?

31 votes
Accepted

Why is the ribbon of decommissioned geosynchronous satellites skewed?

29 votes
Accepted

Why did Salyut 7 freeze over, while ISS requires massive cooling system?

28 votes
Accepted

Why does the Curiosity rover camera image resolution have "milliradians" as a unit?

28 votes
Accepted

Using a fidget spinner to rotate in outer space

25 votes
Accepted

Diffraction artifact on the March 16, 2022 JWST aligned test image

25 votes
Accepted

Why are obsolete geostationary satellites re-orbited above the geostationary belt?

25 votes

Why were the Sputniks launched to such high apogee?

22 votes

Place a satellite at Sun-Mars L1 to shield Mars from Sun radiation

20 votes
Accepted

Why can't we use charged fine metal dust instead of plasma for ion thruster?

20 votes

How realistic is the 1 kg/km² solar sail in "Death's End"?

18 votes
Accepted

How stable are satellites in a graveyard orbit

17 votes
Accepted

How does an array of concrete pillars protect a launch control bunker?

17 votes

Why are there double shadows in this Apollo 14 magazine?

17 votes
Accepted

Has depleted uranium been considered for radiation shielding in crewed spacecraft beyond LEO?

16 votes
Accepted

Why is the Orion capsule using 2 burns to transfer from the moon back to earth instead of one?

16 votes

Does Krypton or Xenon produce more thrust in a Hall-effect thruster?

15 votes
Accepted

The Moon's shadow could not possibly look like this — could it?

15 votes

What would it cost to bring a 1 gram payload to the CMBR rest frame (i.e. Δv 368 km/s ?)

14 votes

"Pillars of Baikonur" What is the purpose of the hundreds of short, white posts near the Baikonur Cosmodrome launch pad?

14 votes
Accepted

Using lower stage as reaction mass

14 votes

The speed of Apollo 11 at first stage separation was apparently only about 40% of what NASA claims? What does this indicate?

14 votes
Accepted

Why is there a black donut in Perseverance's SkyCam? Is it always used to block the Sun? (sky cameras on Earth don't) How does it work?

14 votes

Why is it easier to escape the solar system than get to Mercury or the Sun?

13 votes
Accepted

Why does the Alpha Magnetic Spectrometer (AMS) on the ISS use carbon dioxide for coolant?

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