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…

The First Human Satellite: Flying Free With the MMU

31 years ago today, on Feb. 7, 1984, NASA astronaut Bruce McCandless II became the first “human satellite” when he tested the Manned Maneuvering Unit during STS-41B. Self-propelled via 24 small nitrogen-powered thrusters, the MMU allowed McCandless (who was instrumental in developing the Unit at Lockheed Martin) to travel tether-free through space. In the iconic photo…

Where Are All of Earth’s Impact Craters?

When you look up at the Moon through a telescope or pair of binoculars you see a world covered in craters of all sizes. It only stands to reason that Earth must also have craters like the Moon, if not many more because of its much larger size. So where are they all? As it…

New Horizons Grabs Its First On-Approach Images of Pluto

After more than nine years of rocketing outwards through the Solar System, NASA’s New Horizons spacecraft is now zeroing in on its targets: the dwarf planet Pluto and its family of frozen moons, orbiting the Sun over three billion miles away from Earth. The images above show Pluto and its largest moon Charon on January 25…

What Do Lunar Phases Look Like From the Other Side of the Moon?

We’ve all seen the Moon go through its phases over the course of a month’s time (give or take a day or two) as it travels in its orbit around the Earth, and you may have even seen the cool animation from the NASA Goddard Visualization Studio showing an entire year’s worth of lunar phases….

Dawn Captures the Bestest Images Ever of “Hipster Planet” Ceres

This is the second animation from Dawn this year showing Ceres rotating, and at 43 pixels across the images are officially the best ever obtained! NASA’s Dawn spacecraft is now on final approach to the 590-mile-wide dwarf planet Ceres, the largest world in the main asteroid belt and the biggest object in the inner Solar System that has yet to…

Remembering the Tragedy of Apollo 1

This is a reprint of a post from 2013, updated for the date and now including a map of the lunar farside. Today marks the 48th anniversary of one of the worst tragedies to befall NASA and human spaceflight: the fire that broke out in the Apollo 204 (later renamed Apollo 1) command module during a…

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…

Been Waiting for Hi-Res OSIRIS Images of Rosetta’s Comet? Here They Are!

Many of the images we have been seeing of Rosetta’s comet – 67P/Churyumov-Gerasimenko, or 67P for short – have been captured with the spacecraft’s NavCam instrument. And while they have been amazingly beautiful in their own right, NavCam isn’t Rosetta’s best camera; that distinction goes to OSIRIS, the Optical, Spectroscopic, and Infrared Remote Imaging System…