Scientists are perplexed by the detection of molecular oxygen in comet 67P’s tail – a completely unexpected discovery.
Why finding molecular oxygen on comet 67P is a really big deal.
The early solar system was once a turbulent place.
The early solar system was a busy place with plenty of meteorite impacts on the new planets and moons. But finding evidence of such impacts on Earth can be tricky.
Dramatic, but not apocalyptic.
Stanimir G Stoev
A rare super blood moon visible from parts of the Earth this month will delight those people lucky enough to see it. But why has this marvel of the solar system got some people so worried?
A frozen lake of water-ice on the floor of a 35 km wide impact crater on Mars.
Copyright ESA/DLR/FU Berlin (G. Neukum)
Ice is everywhere in the solar system and there may even be liquid water beneath the surface of a number of planets. But could we ever get to it?
We know exactly what it looks like but have been unable to explain how it came into being - until now.
NASA, ESA, and A. Simon (Goddard Space Flight Center)
How a bunch of pebbles could have created Jupiter, Saturn, Neptune and Uranus.
Artist’s conception of the young exoplanet 51 Eridani b.
Danielle Futselaar & Franck Marchis, SETI Institute
Studying the young, Jupiter-sized planet 51 Eridani b opens a window into our solar system's past.
We got you, Pluto!
In the long lead-up to our ultimate flyby of Pluto, space science has reconfigured our notions of what it means to be a solar system, a planet, a world.
Pluto’s enigmatic companion Charon.
What can the data from New Horizons tell us about the dwarf planet's five moons?
High resolution view of a 300 km wide region of Pluto. But where are the impact craters?
Lack of impact craters intrigues space experts who say it suggests the dwarf planet may be geologically active.
One of the most detailed images of Pluto captured by New Horizons just before it’s closest approach to the dwarf planet.
Now the flypast of Pluto is over the space probe New Horizons will begin sending the data back to Earth. It will take many months but what will it reveal about the dwarf planet?
Preparation of Mariner 4 before its fly-by of Mars, exactly 50 years ago.
Exactly half a century ago the US Mariner 4 made the first flyby of Mars. But why are we still doing flybys today?
What would New Horizons be able to achieve if it had been built today rather than 20 years ago?
Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/NASA
NASA's New Horizons spacecraft is nearly two decades old. Is that a problem?
New Horizons' look at Pluto’s Charon-facing hemisphere reveals intriguing geologic details that are of keen interest to mission scientists. This image was taken on July 11, 2015, when the spacecraft was 4 million km from Pluto.
The New Horizons spacecraft is only hours away from its closest approach to Pluto. It's hoped the brief encounter will help answer many questions about the oddball member of our solar system.
Once there was water….
Some atomic ratio detective work on our solar system neighbors tells us a lot about their watery pasts. That Venus and Mars are mostly dry now could be a cautionary tale for us on the Blue Planet.
An artist’s impression: MESSENGER flying over a colourful Mercury.
NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
It was the first probe to find water on Mercury, the planet closest to the sun. Its mission nearly over, MESSENGER is about to crash into the planet it's been observing.
Artist’s impression of NASA’s New Horizons spacecraft encountering Pluto and its largest moon, Charon.
NASA/Applied Physics Laboratory/Southwest Research Institute
Who gets to name the craters and features on our planets was once an ad hoc affair. But now the public can have a say with just days left to vote.
Pale Blue Dot – Earth, imaged by Voyager 1 from 6 billion kilometres away.
From a big blue marble to a tiny dot in space -- reflections on our images of Earth.
Kepler-186f, the first validated Earth-size planet to orbit a distant star in the habitable zone.
One to three planets in habitable zones around stars in our galaxy could sustain life.
Artist’s concept of the moon-forming collision.
New experiments show that the asteroids that slammed into Earth and the moon more than 4 billion years ago were vaporised into a mist of iron. The findings, published in Nature Geoscience, suggest that…
Two views of Ceres acquired by NASA’s Dawn spacecraft ten hours apart on Feb. 12, 2015, from a distance of about 52,000 miles as the dwarf planet rotated.
With increasing knowledge and familiarity, we'll no longer be able to identify meaningful criteria to keep these good planets down.