Travelers In The Night
443-Unsung Heroes
- Author: Vários
- Narrator: Vários
- Publisher: Podcast
- Duration: 0:02:01
- More information
Informações:
Synopsis
In 2017 observers in 50 countries at 440 different observatories made nearly 19 million observations of asteroids and comets which enable scientists to calculate where about 800,000 objects will be in the future.
