The stars with the most confirmed planets are the Sun (the Solar System's star) and Kepler-90, with eight confirmed planets each, followed by TRAPPIST-1 with seven planets. The multiplanetary …

Jan 20, 2026 · Our planetary system is the only one officially called “solar system,” but astronomers have discovered more than 3,200 other stars with planets orbiting them in our galaxy. That’s just how …

Nov 14, 2023 · Exoplanets are worlds that orbit stars other than the sun. Since their discovery in the 1990s, these alien planets have been revealing that the universe is a diverse place.

Oct 30, 2025 · From the total of 4,584 stars known to have exoplanets (as of 30 October 2025), there are a total of 1,017 known multiplanetary systems, [1] or stars with at least two confirmed planets, …

It wasn't until the 1990s that astronomers began to discover other planetary systems. And with new advances in science and technology, who knows what other out-of-this-world wonders we'll find in …

Jan 30, 2026 · The discovery of extrasolar planets—planets circling other stars—would help clarify their ideas of the formation of Earth’s solar system by removing the handicap of being able to study only …

Aug 30, 2025 · Uncover the vast scale of planetary systems beyond our own. Learn how astronomers define and estimate their cosmic prevalence.

Known Planetary Systems There are 258 known planetary systems around main sequence stars,

4 days ago · Astronomers have found an 'inside-out' planetary system, where the outermost planet is rocky, and the inner planets are gas giants.

Feb 17, 2023 · Before 1992, when astronomers found the first exoplanets, they assumed other solar systems – if they existed – would be similar to ours. Now, we’ve found more than 5,000 exoplanets.