Linked Questions

28 votes
5 answers
6k views

Would Earth fireworks work on the Moon or on Mars?

Fireworks have had a very long history and have evolved into highly engineered devices with simultaneously excellent performance and reliability. Even small tweaks require research, testing, and are ...
uhoh's user avatar
  • 149k
33 votes
5 answers
9k views

India just shot down a satellite from the ground. At what altitude range is the resulting debris field?

This tweet from India's prime minister Narendra Modi says: मेरे प्यारे देशवासियों, आज सवेरे लगभग 11.45 - 12.00 बजे मैं एक महत्वपूर्ण संदेश लेकर आप के बीच आऊँगा। I would be addressing the nation at ...
uhoh's user avatar
  • 149k
17 votes
2 answers
2k views

What is the largest number of identical satellites launched together?

What is the largest number of (essentially) identical satellites launched together? Form factor alone (e.g. 1U, 3U cubesat) is not enough to make satellites identical, they need to be the same design,...
uhoh's user avatar
  • 149k
14 votes
2 answers
2k views

Artificial Shooting Stars - how could this possibly work (economically/technologically)?

update March 2018: I just saw this in Buzzfeed (Google sent me there, I don't normally read it): Rich People Will Soon Be Able To Buy Fake Meteor Showers On Demand @Antzi mentioned below the question ...
uhoh's user avatar
  • 149k
6 votes
3 answers
2k views

What types of decoupling mechanisms to separate spacecraft are used in spaceflight?

For a project I have to find select a decoupling mechanism for a spacecraft. I have searched google but I can't find any documentation on decoupling mechanisms. I need to know what types of decoupling ...
Michel Touw's user avatar
6 votes
3 answers
1k views

What is the typical relative impact velocity of orbital debris in low Earth orbit?

We all know that space is about going really fast. We also know that what matters in a collision isn't really absolute speed, but relative velocity. (Two cars with matched speeds on a highway touching ...
user's user avatar
  • 7,310
3 votes
2 answers
167 views

Does earth orbiting debris that threatens the space station have a particular direction bias?

I'm starting to investigate the danger of orbital debris on the ISS (international space station). One could assume that due to the orbital velocity vector, that any debris that the ISS encounter, ...
not2qubit's user avatar
  • 167
4 votes
1 answer
226 views

How much do on-demand, artificial meteor showers cost these days?

On-demand, artificial meteor showers are discussed in Artificial Shooting Stars - how could this possibly work (economically/technologically)? Why would a box full of 1cm balls released into LEO be ...
uhoh's user avatar
  • 149k
2 votes
0 answers
447 views

How can a paint fleck make a window bullseye?

This answer repeats the fact that something as small as a few micrometers in diameter can make a visible bullseye in a window in orbit. I heard it with respect to the space shuttle, and now they have ...
JDługosz's user avatar
  • 539
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