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Questions tagged [weather]

Questions regarding effects of weather on space exploration and how it can be forecasted and managed on Earth and on other bodies with atmospheres.

3 votes
2 answers
217 views

What would have happened if lightning struck the Orion LES instead of the umbilical tower?

Yesterday, a lightning struck the SLS' umbilical tower during a scrubbed wet dress rehearsal. Is it normal for a lightning to strike the umbilical tower instead of the 3 lightning arresters around the ...
Ashvin's user avatar
  • 2,888
1 vote
0 answers
95 views

Has an aircraft's flight ever been delayed on another planet? If so, who, what, when, where and why exactly?

For the benefit of future readers and our spaceflight-firsts tag: Question: Has an aircraft's flight ever been delayed on another planet? If so, who issued the delay order, what spacecraft's flight ...
uhoh's user avatar
  • 148k
1 vote
0 answers
97 views

How does the wind behave throughout the day in Jezero Crater? (worried about Ingenuity)

JPL tweet links to mars.nasa.gov's Flying on Mars Is Getting Harder and Harder which explains that seasonal changes are lowering the density of the local atmosphere, presumably due to warmer seasonal ...
uhoh's user avatar
  • 148k
9 votes
2 answers
165 views

Is there an atmospheric pressure model for Mars that takes different temperatures and seasons into account?

Credit: NASA/JPL-Caltech. Above are the pressure data from Curiosity's REMS sensor for the first 200 sols at Gale crater. At about sol 170 Mars was at perihelion and a month later it was southern ...
Cornelis's user avatar
  • 7,535
4 votes
3 answers
469 views

How long would astronauts' footprints on Mars persist?

The Apollo astronauts' footsteps can remain theoretically forever on the Moon as it has no atmosphere. Mars does have an atmosphere but a very thin one. Its pressure ranges from 72 Pa (0.0104 psi) on ...
Giovanni's user avatar
  • 389
8 votes
3 answers
462 views

Might Ingenuity tip over?

While Ingenuity patiently waits for its preflight checks to pass, how likely is it that a wind gust could tip it over? How strong and how rare a gust? Those rotors have plenty of area. (Surely NASA ...
Camille Goudeseune's user avatar
4 votes
0 answers
258 views

SN11 was launched in fog. Why not wait for better conditions?

The fog certainly frustrated the external observers, but it doesn't seem ideal from SpaceX perspective either. All the external observers were very distant from the launch/landing site and would be ...
Roger Wood's user avatar
  • 3,894
0 votes
1 answer
130 views

How many planets have had their limbs scanned with radio signals?

This answer to When did planetary scientists realize Venus' surface pressure was almost 100x that on Earth? How did they find out? describes one example of scanning the limb of a planet using ...
uhoh's user avatar
  • 148k
11 votes
1 answer
486 views

Perseverance individual sample collection post-mission; what stops them from blowing away or getting covered and hidden by dust?

I have been seeing videos that the plan after Perseverance is done collecting samples to distribute them in 'strategic' locations around Mars for another rover to drive around and pick up later. Why ...
necroncryptek's user avatar
17 votes
1 answer
2k views

Are launch windows to Mars avoided if they result in landings during dust storm season?

This comment suggests that orbit before descent to Mars' surface allows a mission to delay the landing if the weather conditions are bad. I think that Tianwen-1 will be the first to put a lander rover ...
uhoh's user avatar
  • 148k
2 votes
0 answers
64 views

Propulsion thrust vs high winds?

While I do understand that high wind speed is a risk for space launches (and all air flights), still, is it a physical constraint or a computational problem given we are not dealing with a hurricane/...
J. Doe's user avatar
  • 2,890
70 votes
4 answers
11k views

Why did it take so long to notice that the ozone layer had holes in it? Which satellite provided the data?

Wikipedia says: The discovery of the annual depletion of ozone above the Antarctic was first announced by Joe Farman, Brian Gardiner and Jonathan Shanklin, in a paper which appeared in Nature on May ...
uhoh's user avatar
  • 148k
22 votes
5 answers
4k views

Does upper atmosphere rotate with earth?

Basic question that I should know the answer to but sadly don't. The lower atmosphere must rotate with the earth because of friction---at least the very bottom of it. But what about 30 miles up? There ...
user avatar
4 votes
1 answer
394 views

What if you tried to fly a kite on Mars?

I wonder what kite flying might be like on Mars, in one per cent the atmospheric pressure of Earth, about two per cent the Earth's atmospheric density and 38% the Earth's surface gravity. Are there ...
Giovanni's user avatar
  • 458
1 vote
1 answer
110 views

Did any sounding rocket ever fly through a noctilucent cloud?

Noctilucent clouds are the highest clouds forming above the Earth, up in the mesosphere. They form in late spring / early summer and above latitudes closer to the poles. Was a sounding rocket ever ...
Giovanni's user avatar
  • 515

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