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.
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.
An amateur astronomer has discovered what is believed to be a comet that has come from a distant solar system.
Water vapor has been identified on what is being hailed as the most habitable exoplanet found to date.
Astrophysicists have discovered a way to detect the surviving cores of planets orbiting white dwarf stars.
Astronomers have announced the discovery of a large, potentially habitable world in a nearby solar system.
The experimental project could one day make it possible for solar sails to propel spacecraft to other worlds.
NASA has released a breathtaking photograph showing the space station silhouetted against our solar neighbor.
The new worlds are so much like our own that both are now on a list of the 19 planets most likely to support life.
Scientists now believe that our Sun is capable of producing a type of powerful and disruptive 'superflare'.
According to a new study, many planets in the so-called habitable zone can only support single-celled organisms.