Global astronomers bid farewell to NASA's famed Cassini spacecraft, which launched 20 years ago to circle Saturn and transformed the way we think about life elsewhere in the solar system.

Two high-intensity solar flares are emitted, the second of which was the most intense recorded since the start of this sun cycle in December 2008, says NASA.

NASA reveals 10 new rocky, Earth-sized planets that could potentially have liquid water and support life.

Two US astronauts overcome an early equipment glitch to complete an abbreviated spacewalk outside the International Space Station, accomplishing all the major tasks initially planned for a longer excursion in four hours, NASA says.

India successfully launches 20 satellites in a single mission, the most in the history of the country's ambitious space programme.

UK astronaut Tim Peake is back on Earth after a historic six-month stay on the International Space Station.

The Earth gets a small companion. NASA scientists discover a small asteroid in an orbit around the Sun that keeps it as a constant companion of Earth and it will remain so for centuries to come.

Mars is going through an ice age, according to a new study. Based on radar data collected by Nasa's Mars Reconnaissance Orbiter, researchers at the Southwest Research Institute have found an increase in ice at Mars' north pole is consistent with the long-term drop in temperature associated with an ice age.

Oceans on Europa, one of Jupiter’s 67 known moons, might have a lot in common with our own oceans, including a chemical balance capable of harboring life, according to a new study released by NASA on Tuesday.

April is the seventh month in a row that breaks global temperature records, Nasa figures show.

Nasa's Kepler telescope has discovered more than 100 Earth-sized planets orbiting alien stars.

NASA researchers have detected atomic oxygen in Mars' atmosphere for the first time in 40 years, thanks to the Stratospheric Observatory for Infrared Astronomy (SOFIA) which soars on a plane 13.7 kilometres (45,000 feet) above Earth, reports Science Alert.

Curiosity is a rover exploring Gale Crater on Mars as part of NASA's Mars Science Laboratory mission. Let’s take a closer look into the Martian land, more specifically its dunes.

Rocks on the surface of Mars have provided the best clue yet that the red planet once had an atmosphere rich in oxygen.

There’s no bursting this bubble. The folks at the Hubble Space Telescope have released magnificent images of a “gigantic cosmic soap bubble” to celebrate Hubble’s 26th anniversary in space.

A roughly 2,000-square-mile block of ice just broke off in the Arctic Ocean.

NASA's Mars Reconnaissance Orbiter (MRO) begins its visit to the red planet 10 years ago this week.Since then, the MRO completes about 45,000 trips around Mars, taking more than 200,000 images of it and other objects in the vicinity, according to NASA.

Humans could detect two types of aliens within the next century. These are primitive, microbial life forms within our solar system and an intelligent, advanced alien race that could turn our entire way of life upside down.

US astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko have touched down on Earth after almost a year in space.

NASA just released incredible new photos of Pluto’s north pole, and they seem to raise more questions about this icy planet.