The Mars 2020 rover, which sets off for the Red Planet next year, will not only search for traces of ancient life, but pave the way for future human missions, NASA scientists said Friday as they unveiled the vehicle.

The rover has been constructed in a large, sterile room at the Jet Propulsion Laboratory in Pasadena, near Los Angeles, where its driving equipment was given its first successful test last week.

Shown to invited journalists on Friday, it is scheduled to leave Earth in July 2020 from Florida’s Cape Canaveral, becoming the fifth US rover to land on Mars seven months later in February.

NASA’s Transiting Exoplanet Survey Satellite ( TESS ) has discovered a world between the sizes of Mars and Earth orbiting a bright, cool, nearby star. The planet, called L 98-59b, marks the tiniest discovered by TESS to date.

Science cannot prove the existence of God, but it cannot disprove God either; it can only disprove the notion of a specific, poorly conceived God. If you claim that your God lives in the clouds, you can disprove that God by simply observing the clouds. If you claim that God lives in our Universe, you can disprove that God by observing the entire Universe. But if your God exists in an extra dimension, before cosmic inflation, or outside of space and time altogether, neither proof nor disproof is possible.

In a fundamental way, it is purely a matter of what your faith is. All we can control, at the end of the day, is how we treat one another. Do we welcome those who believe different things than we do into our hearts, communities, and lives? Or do we shun, exclude, and “other” them?

Regardless of what you believe, I have the same advice for you: choose kindness. It costs nothing, while benefitting the giver, the recipient, and those who simply witness it. Whether you say that God made us or not, I would say the same thing: the wonders and joys of science and the Universe are for you, exactly as you are, too.

The third launch of China’s heavy-lift Long March 5 rocket successfully delivered its satellite payload to orbit Friday, validating engine design changes after a failure on the Long March 5’s second flight, and clearing the way for the launch of a Chinese Mars rover and lunar sample return mission in 2020.

NASA hopes to learn more about how dust clouds in our solar system may resemble those in orbit around other stars.

The red giant Betelgeuse is the dimmest seen in years, prompting some speculation that the star is about to explode. Here’s what we know.

It was found along the side of a road in a remote Australian gold rush town. In the old days, Wedderburn was a hotspot for prospectors – it occasionally still is – but nobody there had ever seen a nugget quite like this one.

The Wedderburn meteorite, found just north-east of the town in 1951, was a small 210-gram chunk of strange-looking space rock that fell out of the sky. For decades, scientists have been trying to decipher its secrets, and researchers just decoded another.

In a study published in August this year, led by Caltech mineralogist Chi Ma, scientists analysed the Wedderburn meteorite and verified the first natural occurrence of what they call ‘edscottite’: a rare form of iron-carbide mineral that’s never been found in nature.