Share

The Most Amazing Alien Planet Discoveries of 2013

Mike Wall
Published: December 29, 2013

The Most Earthlike World Yet

David A. Aguilar (CfA)

An artist's illustration of the strange Earth-like rocky planet Kepler-78b, which orbits a sun-like star 400 light-years from Earth. The planet is 20 percent wider and 80 percent more massive than Earth.

Also this year, researchers found the closest thing to an Earth twin in size and composition, though it's far too hot to support life as we know it.

Kepler-78b is just 20 percent wider and about 80 percent more massive than our planet, with a density nearly identical to that of Earth. The alien world, which is about 400 light-years from Earth, lies just 900,000 miles (1.5 million km) from its host star and completes one orbit every 8.5 hours. Surface temperatures on Kepler-78b likely top 3,680 degrees Fahrenheit (2,000 degrees Celsius), researchers say.


Featured Blogs

The 2015 Atlantic Hurricane Begins; New CSU, TSR Forecasts Call For a Quiet Season

By Dr. Jeff Masters
June 1, 2015

The 2015 Atlantic hurricane season is officially underway, and there are indications that the second tropical depression of the year has a chance to form late this week in the waters near South Florida or the Bahama Islands on Friday or Saturday.

Hottest Summers, Coldest Winters for Contiguous U.S.: A Few Years Loom Large

By Christopher C. Burt
May 28, 2015

Keeping track of all-time warmest/coldest daily maximum temperatures and all-time warmest/coldest months on record for any given site is a fairly easy task. However, very few NWS sites provide data concerning what their respective coldest climatological winters (December-February) or hottest climatological summers (June-August) have been. Researching 300 sites in the contiguous U.S. I have put together this summary for such. Below are the methods I used and some of the results, which proved quite interesting.

Please check out the new homepage and tell us what you think!

By Shaun Tanner
April 2, 2015

The development team here at Weather Underground has been hard at work producing a new homepage! Please take a look at the sneak peek and tell us what you think!

Meteorological images of the year - 2014

By Stu Ostro
December 30, 2014

My 9th annual edition.

2013-14 - An Interesting Winter From A to Z

By Tom Niziol
May 15, 2014

It was a very interesting winter across a good part of the nation from the Rockies through the Plains to the Northeast. Let's break down the most significant winter storms on a month by month basis.

What the 5th IPCC Assessment Doesn't Include

By Angela Fritz
September 27, 2013

Melting permafrost has the potential to release an additional 1.5 trillion tons of carbon into the atmosphere, and could increase our global average temperature by 1.5°F in addition to our day-to-day human emissions. However, this effect is not included in the IPCC report issued Friday morning, which means the estimates of how Earth's climate will change are likely on the conservative side.