Other stars may be able to host more than our own solar system's solitary habitable world, a new study suggests.
Scientists have highlighted the role of dust in cooling or warming an otherwise uninhabitable extrasolar world.
The closest known extrasolar planet may also be one of the most Earth-like worlds ever discovered.
Astronomers have identified a distant exoplanet with a size and orbit comparable to that of the Earth.
A stunning new image of the solar system's largest planet was put together from hundreds of shots.
A relatively nearby extrasolar world discovered back in 2004 has since disappeared without a trace.
Scientists have discovered one of the most Earth-like extrasolar worlds ever seen and they almost missed it.
Eyebrows were raised recently when a strange wheel-like object showed up in solar observatory imagery.
Scientists have announced the discovery of 139 new objects situated in the far reaches of our solar system.
Scientists have identified an extrasolar planet with some of the most hostile surface conditions ever seen.
Scientists have warned that a long period of particularly low solar activity could lead to much colder winters.
The long-lived spacecraft went into fault protection mode last week after unexpectedly drawing too much power.
Scientists have identified the oldest material ever to make it onto our planet - and it even predates the Sun.
NASA has released two new images showing interstellar comet Borisov traveling through our solar system.
Astronomers have discovered a huge planet orbiting the burnt-out husk of a star that was once like the Sun.
The groundbreaking solar probe has sent back its first observations from the edge of the Sun's atmosphere.
Astronomers have determined that comet 2I/Borisov could be carrying water from a distant solar system.
NASA engineer David Burns has developed a concept for a new drive capable of reaching distant solar systems.
Astronomers have revealed that comet 2I/Borisov is remarkably similar to comets from our own solar system.
The undiscovered theoretical planet in the outer reaches of our solar system may actually be a black hole.