Roaming Astronomer

Saturn eclipsing the sun, seen from behind by the Cassini orbiter. Earth can be seen as a small dot between the rings on the upper, left...

or-bit (ˈȯr-bət) noun . 1. a. A path described by one body in its revolution about another (as by the earth about the sun or by an electro...

e-clipse  ( i-ˈklips)  noun.   1. a. The total or partial obscuring of one celestial body by another.  b. The passing into the shadow of a ...

On August 21, millions of people will look skyward to witness a spectacle not seen in 38 years—a total eclipse over the continental United ...

Friday marked the first year on orbit for NASA's newest solar observatory. On June 27, 2013, the Interface Region Imaging Spectrograph ...

NASA held a media teleconference this morning to discuss yesterday’s near-space test flight of the agency's Low-Density Supersonic Dece...

NASA has reported that at approximately 5:05pm EDT today, the Low-Density Supersonic Decelerator (LDSD) test vehicle successfully dropped ...

After a series of weather delays, NASA will attempt to launch the Low-Density Supersonic Decelerator (LDSD) into Earth's atmosphere to...

This coming Monday will mark a decade since a bus-sized robotic traveler from Earth first soared over the icy rings of Saturn and fired it...

The concept known as Plato seems destined to be the next mission in ESA's Cosmic Vision program. Plato was chosen by an expert panel a...

In its first 25 days of operations, the newly reactivated NEOWISE mission has detected 857 minor bodies in our solar system, including 22 ...

Engineers at NASA's Jet Propulsion Laboratory in Pasadena, California, are testing a sophisticated flight-control algorithm that could ...

Scientists using the Herschel space observatory have made the first definitive detection of water vapor on Ceres, the largest and roundest ...

Sometime between December 26, 2013 and January 8, 2014, a span of just 13 days, a bright rock came into view near NASA's Mars Explorati...

John Lowry Dobson (September 14, 1915 – January 15, 2014) was an amateur astronomer and best known for the Dobsonian telescope, a portable,...

On Monday, January 20, ESA's Rosetta spacecraft responded to communications from mission controllers after being in deliberate hibernat...

NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR, is giving the wider astronomical community a first look at its unique X-ray ima...