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Science Wire | Feb 24, 2015

Does dark matter cause mass extinctions?

As we journey around the galaxy, our solar system might regularly interact with dark matter, which might dislodge Oort cloud comets and boost heat in Earth’s core.

This Date in Science | Feb 23, 2015

This date in science: Closest supernova since 1604

Awesome images of Supernova 1987A, a colossal stellar explosion. Plus insights gained from study in the years since then.

Artist's depiction of Scholz's star, a low-mass red dwarf star and brown dwarf companion (foreground) during its flyby of our solar system. The sun (left, background) would have appeared as a brilliant star.  Image via Michael Osadciw/University of Rochester.
Science Wire | Feb 21, 2015

Roaming star system a near miss!

Scholz’s star passed only 0.8 light-years from our sun, only 70,000 years ago. It came closer than any other known star, sweeping through the Oort comet cloud.

John Glenn and Friendship 7
Blogs | This Date in Science | Feb 20, 2015

This date in science: John Glenn first American to orbit Earth

On February 20, 1962, John Glenn became the first American to orbit the Earth. He made three turns around the planet before returning safely.

Photo credit: Mike O'Neal
FAQs | Feb 20, 2015

What makes Venus the brightest planet?

Why Venus is so bright, plus dates for Venus at greatest brilliancy in 2015.

mars-mystery-plume-5-17-2012-Hubble Space Telescope-cp
Science Wire | Feb 18, 2015

Mystery plumes on Mars puzzle scientists

Amateur astronomers spotted them first, but they show up in Hubble images, too. Astronomers are scratching their heads, wondering these mystery plumes are.

Progress 58 launch, February 17, 2015
Science Wire | Feb 17, 2015

Russian supply ship launched to ISS today

It’s a fast-rendezvous, six-hour launch-to-dock mission to the International Space Station. Docking will occur later today. Online viewing details here.

Artist's illustation via scienceblogs.com
Science Wire | Feb 16, 2015

When space expanded faster-than-light

New maps from Planck mission support theory of cosmic inflation, the idea that, in the moments following Big Bang, space expanded faster than the speed of light. George Efstathiou – a Planck mission leader – explains more to Kavli Institute’s Kelen Tuttle.

D.A.McGrath is one of 100 finalists who will compete for a one-way journey to Mars.
Science Wire | Feb 16, 2015

100 to compete for one-way Mars trip

The private venture Mars One has announced its selection of 50 men and 50 women who will compete via reality TV for a one-way Mars trip, as early as 2024.

View larger. | Composite image of Teacup Galaxy.  Green shows starlight, blue shows gas and the red/yellow shows radio emission. The bright yellow blobs in the center of the image show where the radio jets, launched by the galaxy's black hole, are driving into the gas and accelerating it to 1,000 km/s (200,000 miles per hour). Image via C. Harrison, A. Thomson; Bill Saxton, NRAO/AUI/NSF; NASA.
Science Wire | Feb 15, 2015

Unexpected storm at a galaxy’s core

At the core of a galaxy called the Teacup, jets from a central supermassive black hole may be gradually destroying the galaxy’s ability to form new stars.