Moving at 2.5 Million MPH
February 25, 2014 | NASA
"The red arc in this infrared image from NASA's Spitzer Space Telescope is a giant shock wave, created by a speeding star known as Kappa Cassiopeiae. [...]
It is a massive, hot supergiant moving at around 2.5 million mph [...]. But what really makes the star stand out in this image is the surrounding, streaky red glow of material in its path. Such structures are called bow shocks, and they can often be seen in front of the fastest, most massive stars in the galaxy." Quoted from the NASA press release.
Water Vapor Jets on Europa?
December 17, 2013 | NASA
"NASA's Hubble Space Telescope has observed water vapor above the frigid south polar region of Jupiter's moon Europa, providing the first strong evidence of water plumes erupting off the moon's surface." Quoted from the NASA press release.
Windows to the Interior of Europa
April 14, 2013 | NASA
"The surface of Jupiter's moon Europa exposes material churned up from inside the moon and also material resulting from matter and energy coming from above." Quoted from the NASA press release.