Mercury can be grouped together with Earth as another tectonically active planet in our Solar System, according to a study that used images captured by the MESSENGER space probe.
Observations using the Hubble Space Telescope may have revealed surprising activity in Europa's subsurface ocean, causing water vapour to erupt from its surface.
A study has calculated that Pluto could be hosting an ocean below its surface with a salt content similar to the Dead Sea on Earth.
Astronomers have been able to discover an exoplanet orbiting two suns by observing how its mass warps spacetime.
Astronomers believe they may have solved the mystery behind a huge, bright cloud of gas found 11.5 billion lightyears away.
New discoveries of ancient lakes and valleys on the Red Planet are helping scientists uncover the story of water on Mars, and whether microbial life could once have existed.
Astronomers using the Hubble Space Telescope have been able to observe a key stage in the evolution of a star in real time.
Quasars are thought to be some of the first light sources to have formed in the Universe, but finding ancient specimens to study is a tricky task. A team of astronomers has found a batch of specimens that nearly doubles the amount of ancient quasars that we know of.
A globular cluster 19,000 lightyears away could be a relic from the early days of the Milky Way, according to new analysis of Hubble Space Telescope data.
Thursday 8 September 2016 marks 50 years to the day that audiences sat down to watch the first episode of Star Trek: The Original Series. Science writer Paul Cockburn explores how 19th century astronomers once believed that a planet called Vulcan genuinely existed in orbit around our own Sun.
Dwarf planet Ceres' mountain Ahuna Mons could be an ice volcano, according to analysis of data collected by the Dawn spacecraft.
NASA's Juno spacecraft has sent images back to Earth following its first close encounter with Jupiter.
A new study has found that the first stars were soley responsible for the reionistation of atoms in the cosmos, leading to the development of the Universe as we know it today, and that they formed much later than thought.
A galaxy cluster has been found that is not only the most distant from Earth yet observed, but which has been caught just as it is going through an intense period of star formation.
A search for missing matter in the Milky Way has revealed the Galaxy went through a fierce burst of actvity six million years ago.
The exact nature of the elusive substance known as dark matter remains a mystery, but observations of massive cosmic structures may hold the key. The latest discovery is a galaxy that consists almost entirely of dark matter.
The search for exoplanets continues in the hope of finding a rocky, habitable planet like our own. The latest discovery is a rocky planet orbiting the closest star outside of our Solar System.
Astronomers have spotted a young, massive star still in its early ages of formation, offering a rare glimpse into an important stage in the formation of massive stars.
A spectroscopic method used by geologists on Earth could help NASA's new Mars rover look for signs of life on the Red Planet.