How Did Pluto Get Its Spots?

As New Horizons continues to close the gap between itself and Pluto more details are being revealed in images of the planet and its (comparatively) giant moon. Some of the latest images are showing some particularly intriguing features just below Pluto’s equator: a row of somewhat evenly-spaced dark spots, each about 300 miles (480 km) wide….

New Horizons Has Caught Its First Color Pic of Pluto

In a historic first – just one of many that will be made over the next several months, to be sure! – the New Horizons spacecraft captured its first color image of Pluto and its partner/satellite Charon on April 9 from a distance of 71 million miles – about equivalent to that between Venus and…

An Oblique View of Abedin Is One of MESSENGER’s Final Scenes

The 72-mile (116-km) -wide crater Adedin is seen at an oblique angle in this mosaic made from images acquired by NASA’s MESSENGER spacecraft. The angle highlights the crater’s central peak complex which surrounds a shallow depression that could have a volcanic origin, as well as fine cracks in the floor of its basin and a…

Curious Stains on Mars’ Summer Slopes Continue to be Seen

As the midsummer Sun beats down on the southern mountains of Mars, bringing daytime temperatures soaring up to a balmy 25ºC (77ºF), some of their slopes become darkened with long, rusty stains that may be the result of water seeping out from just below the surface. The image above, captured by the HiRISE camera aboard NASA’s Mars Reconnaissance Orbiter on Feb….

Ground-Based Radar Reveals the Surface of Venus

These days if you look toward the west after sunset you’ll see a bright star that’s the first to appear in the sky – except it’s not a star at all but our neighboring planet, Venus. Covered in a dense layer of thick clouds, Venus not only reflects a lot of sunlight but also keeps its…

Long Before it Captured a Comet, Rosetta Caught These Views of Mars

These days the world is looking in awe at the incredible images of comet 67P/Churyumov-Gerasimenko from ESA’s Rosetta spacecraft. But it took Rosetta over ten years to arrive at the comet, during which time it got some great views of other worlds in our Solar System as well: Earth (a couple of times), the asteroids Lutetia and…

These 100 People Are One Step Closer to Living – and Dying – on Mars

You may be looking at the faces of future Martians. (*Although that’s looking more and more unlikely – see below.) The video above, released Feb. 15, shows the results of the latest round of selections for the MarsOne mission: to establish living conditions on Mars and, eventually, send 24 individuals who will become the first permanent human residents on…

AKATSUKI to Get a Second Chance at Venus in December

If any of you remember this, back in Dec. 2010 Japan’s Venus Climate Orbiter spacecraft AKATSUKI (or Planet-C), after a five and a half month journey through space, failed to enter orbit around Venus due to a faulty thruster nozzle. It sailed right past the cloud-covered planet, going into orbit around the Sun. Fortunately, JAXA mission engineers…

Opportunity Celebrates 11 Years on Mars With a Grand Panorama

While we have been getting most of our daily images of Mars from NASA’s Curiosity rover over the past couple of years, we shouldn’t forget that there’s still another rover keeping busy on the Red Planet: Opportunity, one of the twin Mars Exploration Rovers (MER-B), still exploring after 11 years! To commemorate Opportunity’s upcoming landing…

Find Out How “Crazy Engineering” Is Getting Dawn to Ceres

Remember Dawn, the spacecraft that showed us our first close-up images of asteroid/protoplanet Vesta when it entered orbit back in 2011? Well Dawn is still going strong, having left Vesta behind and now closing in on its next target: Ceres, a full-fledged dwarf planet and, at about 600 miles (965 km) wide, the largest object in the main asteroid belt. Once…

A Postcard from Mars: Salsberry Peak Panorama

Every now and then I get unexpectedly caught up in a project that I originally intended to be a quick just-for-fun thing and ends up taking an hour and a half of my time (usually long after I should have gone to bed.) This was one of those. Made up of 28 raw images acquired…