Topics from December 2020 Why do planets orbit stars? Posted by Keshav Jain on Thursday, December 3. 2020 If an astronaut fell over a 300 ft cliff on The Moon, would the low gravity save him, and would he bounce? Posted by Keshav Jain on Tuesday, December 1. 2020 Is it true that travel to Mars can occur only once in every two years? If so, why is that so? Posted by Keshav Jain on Tuesday, December 1. 2020 Why do astronauts in space sleep while standing? Posted by Keshav Jain on Tuesday, December 1. 2020