This hypothetical planet is provisionally known as Planet 9. Computer simulations show it must be a very large planet, consisting of between four and eight times the mass of the Earth and at least ten times the distance of Pluto.
French researchers suggesting that the tallest volcano in Solar System, Olympus Mons on Mars was once a volcanic island, surrounded by a deep sea.
Data collected by the BepiColombo spacecraft traces the causes of the strange aurora, which course through the planet's weak magnetosphere.
NASA's Juno spacecraft orbiting Jupiter frequently encounters giant swirling waves at the boundary between the solar wind and Jupiter's magnetosphere.
Researchers poring over imagery and data from the Perseverance rover on Mars have found evidence of organic molecules in the planet’s Jezero Crater, potentially providing evidence of the planet’s carbon cycles and its ability to host life.
An orbiting satellite discovers a mysterious, heat-emitting mass of granite buried under the surface of the far side of the Moon.
Meteor-like fireballs in the atmosphere of the Sun rain down like showers of shooting stars during the phenomenon of coronal rain, scientists have found.
Four small rooms, a gym and a lot of red sand - NASA unveiled its new Mars-simulation habitat, in which volunteers will live for a year at a time to test what life will be like on future missions to Earth.
NASA recently released a stunning new image of Saturn, depicting the planet's rings shining brightly against the blackness of space. The powerful space telescope has now captured all four gas giants in our solar system.
In a recent paper a UK physicist uses past missions and recent findings to encourage the importance of searching for life in the atmosphere of the solar system's most inhospitable planet, Venus.
Phosphorus is the least abundant essential element necessary for life, and its recent detection in icy grains from Enceladus could redefine how we look at life beyond Earth.
This plume is larger than any previously observed on the moon and may contain the necessary chemicals for life coming from below its icy surface.
Recent research shows that the changes in Jupiter's magnetic field are causing these mysterious colour shifts.
The cyclone on Uranus, compactly shaped with warm and dry air at its core, is much like those spotted at Saturn. Now,cyclones have been identified at the poles on every planet in our solar system except for Mercury.
New discoveries by a team of astronomers added 62 new moons to Saturn’s existing 83, bringing its total to 145. Therefore, Saturn is the first planet known to have more than 100 moons.
