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NASA's NuSTAR Captures Possible 'Screams' from Zombie Stars

NASA: Universe News - Wed, 2015-04-29 13:01
Peering into the heart of the Milky Way galaxy, NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) has spotted a mysterious glow of high-energy X-rays that, according to scientists, could be the "howls" of dead stars as they feed on stellar companions.
Categories: Space Exploration

April 29, 1990, Shuttle Discovery Lands Following Hubble Deployment Mission

NASA: Image of the Day - Wed, 2015-04-29 09:52
On April 29, 1990, the Space Shuttle Discovery approaches for landing on a concrete runway at Edwards Air Force Base to complete a highly successful five-day mission during which the Hubble Space Telescope was released into orbit.
Categories: Astronomy Pictures

Astronaut Scott Kelly Speaks at Shuttle Enterprise Dedication Ceremony

NASA: Image of the Day - Tue, 2015-04-28 17:32
NASA astronaut Scott Kelly delivers remarks from onboard the International Space Station during the Space Shuttle Enterprise dedication ceremony Monday, April 27, 2015, at the Intrepid Sea, Air & Space Museum in New York City. Enterprise was dedicated to the fallen crews who gave their lives in pursuit of space exploration.
Categories: Astronomy Pictures

Robotically discovering Earth's nearest neighbors: 54 light-years away

Science Daily: Comets and Asteroids - Tue, 2015-04-28 17:17
Astronomers discovered a planetary system orbiting a nearby star that is only 54 light-years away. All three planets orbit their star at a distance closer than Mercury orbits the sun, completing their orbits in just five, 15, and 24 days.

Unmasking the secrets of Mercury, in color

Science Daily: Mercury - Tue, 2015-04-28 16:51
The MESSENGER spacecraft is the first ever to orbit the planet Mercury, and the spacecraft's seven scientific instruments and radio science investigation are unraveling the history and evolution of the solar system's innermost planet. MESSENGER's highly successful orbital mission is about to come to an end, as the spacecraft runs out of propellant and the force of solar gravity causes it to impact the surface of Mercury near the end of April 2015.

Space Station over Lunar Terminator

Astronomy Picture of the Day - Tue, 2015-04-28 04:51

What's that in front of the Moon?


Categories: Astronomy Pictures

Planetary Nebula Mz3: The Ant Nebula

Astronomy Picture of the Day - Tue, 2015-04-28 04:51

Why isn't this ant a big sphere?


Categories: Astronomy Pictures

Cluster and Starforming Region Westerlund 2

Astronomy Picture of the Day - Tue, 2015-04-28 04:51

Located 20,000 light-years away in the constellation Carina,


Categories: Astronomy Pictures

Blue Tears and the Milky Way

Astronomy Picture of the Day - Tue, 2015-04-28 04:51

Lapping at rocks


Categories: Astronomy Pictures

Meteor in the Milky Way

Astronomy Picture of the Day - Tue, 2015-04-28 04:51

Meteor in the Milky Way


Categories: Astronomy Pictures

Colorful Star Clouds in Cygnus

Astronomy Picture of the Day - Tue, 2015-04-28 04:51

Stars can form in colorful surroundings.


Categories: Astronomy Pictures

Unmasking the Secrets of Mercury

NASA: Image of the Day - Mon, 2015-04-27 09:36
To learn more about the minerals and surface processes on Mercury, instruments aboard NASA's MESSENGER spacecraft have been collecting surface measurements since MESSENGER entered Mercury orbit on March 17, 2011.
Categories: Astronomy Pictures

Electric solar wind sail could make bidirectional human Mars flights economically feasible

Science Daily: Mars - Mon, 2015-04-27 08:25
The E-sail is a novel propellantless technology that was invented in Finland in 2006. The E-sail utilizes long, charged tethers to convert natural solar wind momentum flux into spacecraft thrust.

Electric solar wind sail could make bidirectional human Mars flights economically feasible

Science Daily: Comets and Asteroids - Mon, 2015-04-27 08:25
The E-sail is a novel propellantless technology that was invented in Finland in 2006. The E-sail utilizes long, charged tethers to convert natural solar wind momentum flux into spacecraft thrust.

Vesta Trek: A Digital Model of Asteroid Vesta

Astronomy Picture of the Day - Mon, 2015-04-27 02:51

You can explore asteroid Vesta.


Categories: Astronomy Pictures

Total Solar Eclipse over Svalbard

Astronomy Picture of the Day - Sun, 2015-04-26 13:51

Going, going, gone.


Categories: Astronomy Pictures

Ring Galaxy AM 0644 741 from Hubble

Astronomy Picture of the Day - Sat, 2015-04-25 11:51

How could a galaxy become shaped like a ring? The rim of the blue galaxy


Categories: Astronomy Pictures

April 25, 1990, Deployment of the Hubble Space Telescope

NASA: Image of the Day - Fri, 2015-04-24 10:51
In this April 25, 1990, photograph taken by the crew of the STS-31 space shuttle mission, the Hubble Space Telescope is suspended above shuttle Discovery's cargo bay some 332 nautical miles above Earth.
Categories: Astronomy Pictures

The Great Crater Hokusai

Astronomy Picture of the Day - Fri, 2015-04-24 09:51

One of the largest young craters on Mercury,


Categories: Astronomy Pictures

Can sound help us detect 'earthquakes' on Venus?

Science Daily: Venus - Thu, 2015-04-23 12:58
Detecting an 'earthquake' on Venus would seem to be an impossible task. But conditions in Venus' atmosphere are much more hospitable, and it is here that researchers hope to deploy an array of balloons or satellites that could detect Venusian seismic activity -- using sound.
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