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Questions tagged [meteoroid]

Questions about meteoroids and micrometeoroids, small solid extraterrestrial bodies traveling through interplanetary space. Meteoroids that enter the Earth's atmosphere are called meteors, and remains of those that don't entirely burn or explode in the atmosphere and hit the ground are called meteorites.

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Query about the spark from the movie Avatharam [closed]

The Telugu movie Avatharam, depicts an object resembling a meteor or comet with an interesting tail seen here from 24:49 to 30:00. Have we encountered (or there a theoretical basis for believing that ...
Unrevealed User's user avatar
0 votes
0 answers
89 views

Azimuth and Altitude of a Meteor Shower

What is a reliable source to understand the Azimuth and Altitude of a meteor shower at a specific geographic location at an instant of time for observation?
Smarty's user avatar
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6 votes
0 answers
236 views

How do spacecraft protect their engines from micrometeroids?

A meteoroid impact on an engine bell can easily rupture a coolant pipe. Or it can create an imperfection in the backing plate from where cracks can form. Or it can destroy an injector. All of these ...
Abdullah is not an Amalekite's user avatar
4 votes
1 answer
185 views

Probability of centimeter scale meteoroids killing astronauts

The maximum impact velocity for a meteoroid orbiting the Sun is 72km/s at 1AU. At this velocity, it has an energy density of 2,592 MJ/kg, or 620kgTNT/kg. This means that a 10cm diameter sphere of ice ...
Abdullah is not an Amalekite's user avatar
6 votes
2 answers
253 views

If a spacecraft's double hull filled with water is hit by a micrometeorite, could the water freezing or surface tension stop the leak?

I'm thinking about the possibilities of water storage also serving radiation shielding for long space journeys (months to years). Assume within the solar system but outside of upper earth orbit. ...
Koon W's user avatar
  • 263
12 votes
1 answer
3k views

Can a meteor shower have a interval greater than 1 year?

Most meteor showers are yearly events. In the manga "SoSo no Frieren" the characters experience a meteor shower that happens only once every fifty years. The story does not take place on ...
Mindwin Remember Monica's user avatar
2 votes
0 answers
90 views

What happens if a centimeter-sized particle hits a spaceship at orbital velocity?

How much damage would a centimeter sized particle weighing a few grams do when it impacts a spaceship at orbital velocity? Let's say 30 km/s (Earth's rotation speed around the Sun). Such a particle ...
JanKanis's user avatar
  • 541
7 votes
0 answers
93 views

Would we include the main engine shield if we were designing the Cassini orbiter today?

The Cassini spacecraft flew two bipropellant main engines for major trajectory changes, each with a nominal thrust of 445N (100 lb for us Americans). The engines were located at the aft end of the ...
John McCarthy's user avatar
1 vote
1 answer
77 views

Are there currently any spacecraft in orbit around Venus that might (or might not) be at risk of meteoric dust from comet Leonard C/2021 A?

Astronomer Shreyas Vissapragada @astroshrey ​tweeted Check out the latest from @aciqra, @Yeqzids, et al (including myself!) on C/2021 A1 (Leonard) and its close approach to Venus: Preview of Comet C/...
uhoh's user avatar
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4 votes
1 answer
361 views

Space telescope protective gear?

Is there any history of damage to space telescopes from meteoroids etc? If there is, would the James Webb be going up with any kit for detecting small bodies in near proximity (inside the L2 point) ...
calamus's user avatar
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3 votes
0 answers
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Are artificial satellites impacted primarily by natural or artificial particles?

Are functional artificial satellites/space stations/spacecraft/probes impacted primarily by natural or artificial particles/debris? Lets go by something comparable like impact frequency per mass/...
darsie's user avatar
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3 votes
0 answers
299 views

Is there an estimate for the average mass of all meteoroids and asteroids hitting Earth's atmosphere in one year?

I wonder how much mass is entering Earth's atmosphere every year in the form of meteoroids and asteroids. This excludes micro-meteoroids, dust particles, molecules etc. Quick search result talks only ...
Everyday Astronaut's user avatar
6 votes
0 answers
107 views

How was the high rate of degradation of Hubble's main mirror initially predicted? Why did it turn out to be lower? Were cosmic rays really a concern?

This answer to How long was the HST initially supposed to work? in Astronomy SE quotes Assessment of Options for Extending the Life of the Hubble Space Telescope: Final Report as follows: Hubble was ...
uhoh's user avatar
  • 149k
1 vote
0 answers
51 views

Meteoroid impact frequency in the size range of 1 mm or larger?

I wish to know the frequency of 1 mm diameter or larger meteoroids impacting the Earth's atmosphere each day. NASA's Asteroid Fast Facts (1) says "Every day, Earth is bombarded with more that ...
Vince 49's user avatar
  • 2,611
6 votes
3 answers
371 views

Has any man-made satellite or space vehicle ever been hit by a natural meteoroid?

For precision I'm excluding artificial meteoroids and satellite debris (which is discussed in another question) of all kinds. I'm also considering collisions large enough to produce a noticeable ...
Steve Linton's user avatar
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6 votes
3 answers
815 views

Is there, or has there ever been anything remotely like an electron microscope in space?

I'm guessing Cmdr Hadfield's tweet is only showing an old file photo, but electron microscopes can be quite handy and complement optical microscopes, at high or even low magnification as shown here. ...
uhoh's user avatar
  • 149k
4 votes
0 answers
281 views

Do we have a photo of a micrometeorite impact on a lens?

Micrometeorite and debris impacts on orbital spacecraft pose a threat to systems and crew. For example, a high velocity impact caused this chip in the International Space Station's Cupola. The ISS ...
Jack's user avatar
  • 9,976
5 votes
1 answer
182 views

High velocity particle impact on humans in outer space

The Earth is constantly bombarded by matter from space. Is there any risk of high velocity dust particle/micro-object (cosmic garbage e.g.) impact on astronauts while in outer space? What chance is ...
rook's user avatar
  • 153
4 votes
0 answers
97 views

ISS mass gain or loss due to meteoroids, solar wind, and other particles?

A few questions about the mass of the ISS (1, 2, 3) have got me thinking about mass change of the ISS due to natural processes. The ISS has quite a large area exposed to space, and is subject to both ...
uhoh's user avatar
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1 vote
4 answers
1k views

What is currently used to protect spaceships from meteoroids?

What is used to protect a Mars or possibly interstellar spacecraft against meteoroids and asteroids? How risky it it to travel through space and does higher speeds equal more risk? Would a long ...
Muze's user avatar
  • 1
5 votes
1 answer
2k views

How do astronauts deal with micrometeorites during EVA?

There's always micrometeorites in orbit, and they constantly hit the ISS. So my question is during EVA, how do astronauts protect themselves? Is their suit designed to take impact? Since there are ...
XTImpossible's user avatar
3 votes
1 answer
209 views

Is there any safety advantage/disadvantage to a particular attitude of a vessel in space?

Is there any safety advantage/disadvantage to a particular attitude in space - lined up with the sun, sideways, tumbling or spinning? Assuming a long cylindrical space craft on a long journey within ...
A. Flowers's user avatar
2 votes
0 answers
104 views

Detection of micrometeoroid impacts on the lunar surface using thermal imaging?

For a student project we are looking into the possibility of detecting micrometeoroid (micrometer-size) impacts on the lunar surface with cubesats equipped with a thermal imaging device. We have found ...
Alexander Vandenberghe's user avatar
3 votes
4 answers
260 views

Using nukes to push an incoming meteoroid off course

It's often said (or at least, I have read it somewhere on some occasion), that using nukes to combat a potential incoming meteoroid is not viable because it may split it into multiple incoming bogies. ...
Richard's user avatar
  • 393
7 votes
2 answers
184 views

Angle of meteoroid and debris strikes on ISS

Is it more likely for a space station like the ISS to suffer micro meteor and space debris strikes on the forward side as oppose to others? (it certainly seems less likely to get them on the underside....
Johnny Robinson's user avatar
1 vote
1 answer
153 views

Where to read about early work in the detection of dust impacts on solar observing spacecraft?

I've read in a side note included in this nice answer that : Fun Side Note: The FIELDS instrument is planning to look for dust by detecting the electric field pulses resulting from the plasma ...
uhoh's user avatar
  • 149k
30 votes
1 answer
4k views

How is the Hubble main mirror protected from debris?

The Hubble Space Telescope recently hit 25 years in space. It orbits at ~550 km altitude (limited by the altitude the shuttle could reach to service it) and has sustained minor/trivial exterior ...
1337joe's user avatar
  • 7,206
6 votes
1 answer
2k views

Choosing thickness of a Whipple shield

What are the calculations involved in choosing the thickness of a micrometeoroid shield during the tradeoff study phase? Where can I find publicly available data on the distribution of micrometeoroid ...
Deer Hunter's user avatar
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5 votes
1 answer
729 views

How much meteorite material hits the moon and could it be useful?

Does the material that hits the moon all vaporize and disperse so much it doesn't lead to enriched deposit areas, or could it sometimes be useful? I'm thinking in particular of a permanent moon base, ...
kim holder's user avatar
  • 21.4k
17 votes
1 answer
6k views

Aren't the mirrors of the James Webb Space Telescope too unprotected?

I've looked at the design of the James Webb Space Telescope and I got curious about something, some years ago, it seems that the international space station was hit by micro-meteorites. I'm wondering ...
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