User hdhondt - Space Exploration Stack Exchange

hdhondt

Member for 6 years, 11 months
Last seen this week

Australia

13 Answers

Score Activity Newest

56 votes

Accepted

Why is tantalum being used for the Hayabusa bullets?

answered Jul 30, 2019 at 5:02

12 votes

Accepted

How about space ziplines

answered May 13, 2019 at 23:55

8 votes

Accepted

What is our ability to capture or reflect photons with a wavelength of $2.5×10^{-12}$ meters?

answered Nov 15, 2016 at 2:04

7 votes

Accepted

Was the launch of "Tianhe" a failure or success?

answered May 4, 2021 at 4:59

4 votes

How fast were the Lunar Command Module and Landing Module traveling around the Moon when they reconnected?

answered Jul 30, 2019 at 1:01

3 votes

Accepted

What is the state of the art of exosolar planet imaging in 2019?

answered Jul 1, 2019 at 23:43

3 votes

What can cause grooves (stairs like) features on Mars's ground that is opposite to water flow direction?

answered Jan 16, 2019 at 23:23

2 votes

Feasibility of a small mass driver?

answered Sep 3, 2019 at 3:44

1 vote

Drone Racing on moon

answered Oct 25, 2016 at 4:10

0 votes

Is centre of mass a factor in space without gravity?

answered Dec 17, 2017 at 22:33

0 votes

Using asteroids as propellant source

answered Jan 22, 2018 at 0:57

-1 votes

in microgravity do you need fuel to continue same velocity?

answered May 25, 2017 at 0:08

-2 votes

At a height of 100 km, what speed do you need to be going to escape Earth's gravity?

answered Nov 19, 2019 at 0:56