Understanding the Universe: An Introduction to Astronomy, 2nd Edition Season 1 Episode 38 The Quest for Other Planetary Systems
- October 19, 2023
- 31 min
In 1995, the first extra-solar planet was discovered around a Sun-like star. Since then, about 200 have been found. The easiest to detect are those with large masses, close to their host stars, and with brief orbital periods.