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Puffin's user avatar
Puffin's user avatar
Puffin
  • Member for 9 years
  • Last seen this week
  • UK
24 votes
Accepted

How serious a problem can outgassing of satellites be?

20 votes
Accepted

Nuances of the terms (mean / osculating / Keplerian / orbital) elements

16 votes

Can you really use Arduino for a small spacecraft?

15 votes

Why is the ribbon of decommissioned geosynchronous satellites skewed?

14 votes
Accepted

Why don't reaction wheels destabilize spacecraft over time?

14 votes

What's the largest single object payload ever lifted into space?

13 votes

How much is a geostationary satellite expected to deviate from the geostationary orbit?

13 votes

What are the conditions for re-entry of an object in a (highly) elliptical orbit?

13 votes

Why does spinning help stabilisation?

13 votes

Why can't we use the same tank to hold fuel for both the RCS Thrusters and the Main engine for a deep-space mission?

11 votes

What is "mission design"? What do mission designers do (if such a designation exists)?

11 votes
Accepted

How quickly do the Van Allen radiation belts degrade solar panels?

11 votes
Accepted

Is it possible to launch picosatellite into orbit from railgun on high-altitude plane?

10 votes

Is it correct that it takes approx. 30 minutes for an ICBM to reach Russia?

10 votes

Was Hubble really related to spy satellites?

10 votes
Accepted

How is the launch window decided for GTO launches?

10 votes
Accepted

Harpooning satellites? Is this really the best way to get them under control?

9 votes

Calculating mass expelled from cold gas thrusters

9 votes
Accepted

What do large, modern communications satellites look like inside (roughly at least)?

9 votes

What is the legal status of waste rocket parts ending up in the ocean?

9 votes

Has there been any collision between two active spacecrafts?

9 votes

How to determine the number of Multi Layer Insulation layers for a satellite?

8 votes

Do the propellants ionize in chemical rockets?

7 votes
Accepted

What liability do commercial space firms have for abandoned space junk?

7 votes

How are phased array antennas used in spaceflight? Benefits and limitations

7 votes

Why are Molniya orbits peculiar?

7 votes

Could oxygen be used in a resistojet in a vacuum environment?

7 votes
Accepted

Why is China's primary launch facility so far north?

7 votes

Why aluminum is added in Multi Layer Insulation?

7 votes
Accepted

What are these very large, square panels on Inmarsat 5?

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