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Posts by EarthSky

lunar_halo_300
Science Wire | Nov 21, 2014

What makes a halo around the sun or moon?

A ring or circle of light around the sun or moon is called a halo by scientists.

Image Credit: pmarkham
FAQs | Nov 20, 2014

What is lake-effect snow?

Podcast and 2011 interview with Tom Niziol, a longtime meteorologist-in-charge of the National Weather Service in Buffalo, New York, about lake-effect snow.

2014-nov-20-aldebaran-pleiades-night-sky-chart
Tonight | Nov 20, 2014

November is the month of the Pleiades

Yearly, on or near November 20, the Pleiades cluster culminates – reaches its highest point in the sky – at midnight.

Using the Keck II telescope in Hawaii, researchers obtained high-resolution images of Markarian 177 and SDSS1133 using a near-infrared filter. Twin bright spots in the galaxy's central region are consistent with recent star formation, a disturbance that hints this galaxy may have merged with another. Image credit: W. M. Keck Observatory/M. Koss (ETH Zurich) et al.
Science Wire | Nov 19, 2014

Is this exotic object an ejected black hole or a huge star?

Is SDSS1133 a supermassive black hole ejected from its home galaxy, or the remains of a massive star that exploded as a supernova? Astronomers aren’t sure.

lightning
Science Wire | Nov 17, 2014

More lightning strikes in a warming world?

Rising temperatures could lead to a 50 percent increase in U.S. lightning strikes by the end of the century, says a new study.

Image credit: NASA
Science Wire | Nov 17, 2014

Looking for meteors? Try to get away from city lights

City lights drown all but the brightest stars, planets, and fireballs. But there’s still some dark out there, as this satellite view of the U.S at night shows.

09nov18_430
Tonight | Nov 15, 2014

Use constellation Cassiopeia to find Andromeda galaxy

What’s the easiest way to find the Andromeda galaxy? Many use the constellation Cassiopeia, which is shaped like an M or W.

"Being able to control gene expression via the power of thought is a dream that we've been chasing for over a decade," says Martin Fussenegger.  Photo credit: [Jim]/Flickr
Science Wire | Nov 13, 2014

First gene network operated by brainwaves

Scientists hope a thought-controlled implant might one day help combat neurological diseases, such as chronic headaches, back pain, and epilepsy.

The faint tail can be seen in active asteroid 62412. Image credit: Scott Sheppard
Science Wire | Nov 12, 2014

Comet-like tail discovered on long-known asteroid

Until about 10 years ago, it was pretty obvious what a comet was and what a comet wasn’t. Now, that’s changing …

Jupiter's Great Red Spot
Science Wire | Nov 11, 2014

What makes Jupiter’s Red Spot red?

A new analysis suggests that sunlight – not chemicals beneath Jupiter’s clouds – give the Great Red Spot its ruddy color.