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.
Cruithne’s wacky orbit around the sun.
It's the satellite you probably didn't know that Earth has. If we could land on it, it could be pretty useful
As the Sun matures into a Red Giant, the oceans will boil and Earth will become uninhabitable.
In a few billion years, the sun will become a red giant so large that it will engulf our planet. But the Earth will become uninhabitable much sooner than that. After about a billion years the sun will…
Harvard-Smithsonian Center for Astrophysics image of a supernova explosion discovered by Johannes Kepler in 1604.
Flickr/X-ray: NASA/CXC/NCSU/M.Burkey et al; Infrared: NASA/JPL-Caltech
Our understanding of heavy element production in supernovae, exploding stars way beyond our solar system, may need to change following some discoveries we have made looking not to the skies, but deep under…
Artist’s impression of New Horizons as it swings past the dwarf planet Pluto, in July 2015.
While the Mars Rovers and the Rosetta spacecraft will continue to make headlines in 2015, the stage is set for the solar system’s next great mission – the Pluto-bound New Horizons. Discovered in 1930…
Looking west after sunset on Friday September 26, the thin waxing crescent moon forms a triangle with Mercury and Spica, the brightest star in the constellation of Virgo. You can see how far Mercury has…
The dawn of a new day.
What makes our sun shine has been a mystery for most of human history. Given our sun is a star and stars are suns, explaining the source of the sun’s energy would help us understand why stars shine. An…