Vote Now! Best Space Stories of the Week - June 16, 2013

Most Lightweight Galaxy Ever Found, Dark Atoms & More

ESO/O. Maliy

Last week a lightweight galaxy was the smallest ever discovered, Canadian superstar astronaut Hadfield announced retirement and a new kind of dark matter could form 'dark atoms'. See the top stories of the last week here.

FIRST STOP: Lightweight Galaxy Is the Smallest Ever Found

Lightweight Galaxy Is the Smallest Ever Found

Garrison-Kimmel, Bullock (UCI)

An ultra-faint collection of 1,000 stars orbiting the Milky Way is the most lightweight galaxy ever discovered, scientists say. [Full Story]

NEXT: Canadian Superstar Astronaut Hadfield Announces Retirement

Canadian Superstar Astronaut Hadfield Announces Retirement

Canadian Space Agency (webcast)

Rock star astronaut Chris Hadfield, just returned from a five-month stint in orbit, will be hanging up his spacesuit for a new adventure, the Canadian spaceflyer announced today (June 10). [Full Story]

NEXT: New Kind of Dark Matter Could Form 'Dark Atoms'

New Kind of Dark Matter Could Form 'Dark Atoms'

ESO/O. Maliy

The mysterious dark matter that makes up most of the matter in the universe could theoretically be made up in part by invisible and nearly intangible counterparts of atoms, protons and electrons, researchers say. [Full Story]

NEXT: Blast Off! Chinese Astronauts Launch Into Orbit

Blast Off! Chinese Astronauts Launch Into Orbit

China Manned Space Engineering Office

China has successfully launched a crew of three into Earth’s orbit to dock with the country’s Tiangong 1 module. [Full Story]

NEXT: New Project Will Send Your Messages to Aliens in Deep Space

New Project Will Send Your Messages to Aliens in Deep Space

Lone Signal Media

A group of scientists, businessmen and entrepreneurs are tired of waiting around for E.T. to get in touch with Earth, and they need your help. Here’s how you can send your own messages into the cosmos through the Internet. [Full Story]

NEXT: Some Mars Gullies May Be Carved by Dry Ice 'Sleds'

Some Mars Gullies May Be Carved by Dry Ice 'Sleds'

NASA/JPL-Caltech/Univ. of Arizona

Enigmatic tracks etched onto the slopes of Martian sand dunes may have been carved by sleds of dry ice, a new study reports. [Full Story]

NEXT: Distantly Orbiting Alien World May Challenge Planet-Formation Theories

Distantly Orbiting Alien World May Challenge Planet-Formation Theories

NASA, ESA, J. Debes (STScI), H. Jang-Condell (Univ. Wyoming), A. Weinberger (Carnegie Institution of Washington), A. Roberge (Goddard Space Flight Center), G. Schneider (Univ. of Arizona/Steward Observatory), and A. Feild (STScI/AURA)

Astronomers have found evidence of an alien planet forming surprisingly far from its host star, a discovery that could challenge the prevailing wisdom about how planets take shape. [Full Story]

NEXT: Toxic Mars: Astronauts Must Deal with Perchlorate on the Red Planet

Toxic Mars: Astronauts Must Deal with Perchlorate on the Red Planet

NASA/JPL

The all-pervading carpet of perchlorates found on Mars is being seen as boosting the outlook that microbial life may well exist on the red planet – but perchlorates are also perilous to the health of future crews destined to explore that way off world. [Full Story]

NEXT: World's Largest Solar Sail to Launch in November 2014

World's Largest Solar Sail to Launch in November 2014

L’Garde

A mission that will test out the largest solar sail ever deployed in space is set to launch from Florida in November 2014. [Full Story]

NEXT: Major Milestone: 50 Years of Women in Space

Major Milestone: 50 Years of Women in Space

NASA

Sunday will mark the 50-year anniversary of the launch of the first woman into orbit. [Full Story]

NEXT: China's Space Docking Is Step Toward Ambitious Future in Space

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