Greg's user avatar
Greg's user avatar
Greg's user avatar
Greg
  • Member for 5 years, 3 months
  • Last seen this week
68 votes
Accepted

Why is delta-v the most useful quantity for planning space travel?

20 votes

Is the mass of paint relevant in rocket design?

13 votes

Have there been any setbacks due to COVID-19-- like delays or data-loss?

11 votes
Accepted

Did a spacecraft ever use an atmosphere to accelerate away from a planet?

7 votes

How can a hefty sand storm happen in a thin atmosphere like Martian?

7 votes

What are the G forces leaving Earth orbit?

6 votes
Accepted

What would it take for a balloon to reach an altitude of 65 km (214,000 ft) above the Earth's sea level?

6 votes
Accepted

Why is the Space industry expected to flourish and grow in the near future?

5 votes
Accepted

How do I get started in designing a rocket?

5 votes

How can Mars have dust storms with such a thin atmosphere?

5 votes

What prompted all of those private launch companies to get into the business?

5 votes

Tacking a solar sail to increase duration of acceleration

5 votes

Were there any non-state organizations to organize space flight and colonizations in the second half of the 20th century?

4 votes

Why are rockets cylindrical?

4 votes

Does it make sense to invest money on space investigation?

4 votes

Hypergolic Propellant Combination

4 votes
Accepted

How come satellites and space stations that travel through space at Earth's speed do not disintegrate?

4 votes
Accepted

Can a strong magnetic field be used to propel a spacecraft towards Mars and outer planets in Solar system?

3 votes

How is Cryogenic fuel kept... Cryogenic in rockets

3 votes

How does SpaceX Falcon 9 keep balance while it is near to the landing site?

3 votes

How to get started with CubeSats

3 votes

Solid state thrust vectoring

3 votes

What is the shielding capability of liquid metal compaired to solid metal?

3 votes

What lateral and rotational accelerations can a spacecraft achieve?

3 votes
Accepted

Help Finding A Book

3 votes

What is happening with Zero2Infinity and the Bloostar?

1 vote

The fine prints of launching a satellite

1 vote

Examples of space research applied to Earthly manufacturing

1 vote

Why would rocket bodies use specifically ablative coatings to reduce boil-off of cryogenic propellants? Is ablation important for this?

1 vote

Molecular propellant in ion engines