Astronomers watching a small red dwarf star 500 light years away were surprised to notice a brief dip in its already dim light. But they quickly identified the source of the change: the darker mass of a planet passing between the distant star and our vantage point on Earth.
It is becoming increasingly obvious that our Solar System — with its inner collection of small rocky planets and an outer region buffeted by gas planets — is quite uncommon. According to a remarkable new study, the reason may have to do with Jupiter and an ancient migratory journey that kickstarted the destruction of…
Astronomers watching the repeated and drawn-out dimming of a relatively nearby Sun-like star have interpreted their observations to indicate an eclipse by a gigantic exoplanet's complex ring system, similar to Saturn's except much, much bigger.
A gas giant located about 260 light-years from here has winds that howl at the speed of sound and a day side that's hot enough to melt iron. We know this because astronomers have just made the most detailed weather map of the temperature of an exoplanet's atmosphere. Here's the forecast for WASP-43b.
There's a gas giant located about 330 light-years from here that's not only unusually large, it's also orbiting its host star at an incredibly close distance. According to a new study, this combination of factors is wreaking havoc on the star's innards.
Canadian astronomers have discovered a gigantic planet-like object that's so far from its parent star that it takes 80,000 years to complete a single orbit — a distance that's 50 times farther than Pluto is from our sun. The discovery may force a re-think into how and where planets are capable of forming.
New images acquired by Cassini show a bright clump orbiting Saturn at the outermost edge of its outer ring. Astronomers say it could be a brand new moon in the process of being born.
Located nearly 500 light-years away, ROXs 42Bb is a newly discovered object that astronomers are struggling to define — a unique celestial body that's challenging conventional notions about how planets and stars form.
They’re big, full of gas, and have a penchant for hanging out way too close to their parents. These “hot Jupiters” are among the most common extrasolar planets in the galaxy. Here’s what the latest science is telling us about these celestial wonders.