What created this unusual hole in Mars? The hole was discovered by chance on images of the dusty slopes of Mars’ Pavonis Mons volcano taken by the HiRISE instrument aboard the robotic Mars Reconnaissance Orbiter currently circling Mars. The hole appears to be an opening to an underground cavern, partly illuminated on the image. Analysis […]
[CLICK ON IMAGE FOR HIGH RESOLUTION VERSION] Few cosmic vistas excite the imagination like the Orion Nebula. Also known as M42, the nebula’s glowing gas surrounds hot young stars at the edge of an immense interstellar molecular cloud only 1,500 light-years away. The Orion Nebula offers one of the best opportunities to study how stars […]
[CLICK ON IMAGE TO ZOOM] Early morning dog walkers got a visual treat last week as bright stars and planets appeared to line up. Pictured above, easily visible from left to right, were the Pleiades open star cluster, Jupiter, Venus, and the “Follower” star Aldebaran, all seen before a starry background. The image was taken […]
[SEE HIGH RES IMAGE] A quintet of Saturn’s moons come together in the Cassini spacecraft’s field of view for this portrait. Janus (179 kilometers, or 111 miles across) is on the far left. Pandora (81 kilometers, or 50 miles across) orbits between the A ring and the thin F ring near the middle of the […]
How would you change the course of an Earth-threatening asteroid? One idea – a massive spacecraft that uses gravity as a towline – is illustrated in this dramatic artist’s view of a gravitational tractor in action. In the hypothetical scenario worked out in 2005 by Edward Lu and Stanley Love at NASA’s Johnson Space Center, […]
Click here for high-resolution image. From fresh rover tracks to an impact crater blasted billions of years ago, a newly completed view from the panoramic camera on NASA’s Mars Exploration Rover Opportunity shows the ruddy terrain where the voyaging robot spent the Martian winter. This scene, recorded from the mast-mounted color camera includes the rover’s […]
Magnificent spiral galaxy NGC 4565 is viewed edge-on from planet Earth. Also known as the Needle Galaxy for its narrow profile, bright NGC 4565 is a stop on many telescopic tours of the northern sky, in the faint but well-groomed constellation Coma Berenices. This sharp, colorful image reveals the galaxy’s bulging central core cut by […]
Humanity’s robot orbiting Saturn has recorded yet another amazing view. That robot, of course, is the spacecraft Cassini, while the new amazing view includes a bright moon, thin rings, oddly broken clouds, and warped shadows. Titan, Saturn’s largest moon, appears above as a featureless tan as it is continually shrouded in thick clouds. The rings […]
You wake up one morning and discover that the only safeguard standing between you and impending death has been obliterated. Death is coming. It is relentless and swift. You have three weeks remaining. Suddenly, years lose their meaning. Every second counts. How will you spend them? This is the scenario constructed in Seeking a Friend […]
A 100 kilometer-wide crater has been found in Greenland. The 3 billion year old impact crater – the result of a massive asteroid or comet impact – was found near the Maniitsoq region of West Greenland. The image above is an artist’s interpretation of how a large meteorite impact into the sea might have looked […]
