Tag: protoplanetary disks

Early Evolution of Protoplanetary Disks

Anyone growing up in the 1990s or earlier would recollect that our solar system had nine planets, but did you ever wonder if planets exist outside the solar system? Planets found outside of our solar system are called extrasolar planets or exoplanets. Approximately 5,600 exoplanet candidates have been discovered since 1993, and nearly¬†2,000 exoplanets have… Read more »