Taxonomy term

ice

A Martian icecap, now in 3-D

Move over, James Cameron. Researchers have created the first 3-D subsurface pictures of Mars’ northern icecap — and they’re using these images to solve a 40-year-old Martian puzzle.

The puzzle centered around Chasma Boreale, an ice canyon in the northern icecap that is comparable in size to the Grand Canyon, and the spiral troughs that extend in a pinwheel-fashion from the icecap’s center. How each of these features formed has long mystified researchers.

27 May 2010

Designing Snowflakes

It's easy to forget that powerful snowstorms are made of tiny, delicate ice crystals we call snowflakes. Some snowflakes take a familiar six-sided form. Others are more fantastic. Either way, snowflakes can astound with their intricate beauty.

05 Mar 2010

NASA's LCROSS crashes on the moon

Blogging on EARTH

Usually, NASA hopes its space probes land safely at their destinations. This morning, the agency was planning for a big explosion on the moon — all in the hopes of confirming the presence of water on our nearest neighbor.

09 Oct 2009

Glaciers, not eruption: False alarm volcano mystery solved

When deep, long-period earthquakes started shaking the area around the Katla volcano on the southern tip of Iceland in 2001, officials feared it was a sign of an imminent eruption, as such quakes can be. So they were surprised when nothing happened. A new study identifies the source of the spurious signals: collapsing glaciers around the volcano, not the volcano itself. The finding may help researchers more accurately monitor other glacier-covered volcanoes.

07 Oct 2009

Moon much wetter than thought

The moon isn’t quite the bone-dry place scientists once thought; instead, its surface is covered in water, according to a landmark finding announced by scientists at NASA today.

24 Sep 2009

Glacier moves in fits and starts

The Whillans Ice Stream — an Antarctic glacier that covers an area slightly smaller than the state of New Jersey — flows from the interior of the continent to the ocean at a rate of about one meter per day. That’s not unusual for a large glacier, but how it covers that distance is surprising. Instead of inching along at a steady pace as most glaciers do, the Whillans Ice Stream jerks forward just twice a day, each time sending out seismic waves equivalent to a major earthquake.

28 Aug 2008

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