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Screen Shot 2014-10-28 at 4.42.41 PM
Science Wire | Oct 31, 2014

Why do we scream?

Despite our fascination with screams, science knows relatively little about them. The psychology of screams …

Massive galaxy cluster Abell 2744, nicknamed Pandora's Cluster, takes on a ghostly look where total starlight has been artificially colored blue in this Hubble view.  Image via NASA/ESA/IAC/HFF Team, STScI
Today's Image | Oct 31, 2014

Ghost light from dead galaxies

The Hubble Space Telescope has picked up the faint, ghostly glow of stars ejected from ancient galaxies that were gravitationally ripped apart several billion years ago.

dino 2
Science Wire | Oct 30, 2014

The weird walk of a bizarre dinosaur

Computer animation of Deinocheirus mirificus walking. The bizarre-looking dinosaur had unusually large forearms and features that seem cobbled together from other dinosaurs.

If you can locate the M- or W-shaped constellation Cassiopeia, you can find Perseus.  Then notice Algol, the Ghoul Star!
Tonight | Oct 30, 2014

Find the Ghoul Star of Perseus. Plus see moon and Mars

Tonight … two sky tips. First, as Halloween approaches, look for the star Beta Persei, otherwise known as the Ghoul Star. Also, find Mars!

Transmission electron micrograph of an Ebola virus virion. Image credit: Frederick Murphy / CDC.
Science Wire | Oct 29, 2014

Ebola is at least 16 million years old, says study

Ebola’s first documented outbreak was in 1976. But the Ebola virus family has been around for 16 to 23 million years, says new research.

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Science Wire | Oct 21, 2014

New 3D map of the cosmic web

A team of astronomers has created the first three-dimensional map of the adolescent universe, just 3 billion years after the Big Bang.

Artist's impression of the Milky Way. Its hot halo appears to be stripping away the star-forming atomic hydrogen from its companion dwarf spheroidal galaxies.  Image credit: NRAO/AUI/NSF
Science Wire | Oct 16, 2014

Milky Way strips nearby galaxies of star-forming hydrogen

Astronomers have discovered that our nearest galactic neighbors are devoid of star-forming gas, and that our Milky Way is to blame.

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Science Wire | Oct 16, 2014

What are super-Earths made of?

Astronomers struggle to learn about super-Earths – bigger than our Earth, smaller than Neptune – the most common type of planet found by the Kepler spacecraft.

The 'north pole' -- that is, the direction of magnetic north -- was reversed a million years ago. This map shows how, starting about 789,000 years ago, the north pole wandered around Antarctica for several thousand years before flipping 786,000 years ago to the orientation we know today, with the pole somewhere in the Arctic. Image courtesy of University of California - Berkeley
Science Wire | Oct 16, 2014

Earth’s last magnetic reversal took less than 100 years

A study demonstrates that Earth’s last magnetic reversal – 786,000 years ago – happened in roughly the span of a human lifetime.

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Science Wire | Oct 15, 2014

Spacecraft catches Mars atmosphere in act of escaping

Earth’s atmosphere is leaking into space, too, but only very, very slowly. Meanwhile, Mars is thought to have lost much of its atmosphere already.