Herschel Observatory Finds Mega Merger of Galaxies
A massive and rare merging of two galaxies has been spotted in images taken by the Herschel space observatory, a European Space Agency mission with important NASA participation.
The findings help explain a mystery in astronomy: whether elliptical galaxies built up slowly over time through the acquisitions of smaller galaxies, or formed more rapidly through powerful collisions between two large galaxies.
Forecast for Titan: Wild Weather Could Be Ahead
Saturn's moon Titan might be in for some wild weather as it heads into its spring and summer, if two new models are correct. Scientists think that as the seasons change in Titan's northern hemisphere, waves could ripple across the moon's hydrocarbon seas, and hurricanes could begin to swirl over these areas, too. The model predicting waves tries to explain data from the moon obtained so far by NASA's Cassini spacecraft.
Satellites See Oklahoma Tornado Storm System
On May 20, 2013, NASA and NOAA satellites observed the system that generated severe weather in the south central United States and spawned the Moore, Okla., tornado. Before, during and after the tornado, satellites provided imagery and data to forecasters. NOAA's GOES-13 satellite provided forecasters with images of the storm system every 15 minutes.
Powerful Midwest Storm SystemNew Expedition 36 Trio Prepares for Launch
The Expedition 36 trio aboard the International Space Station started its work week taking apart a treadmill and working on science hardware. Another trio is in Kazakhstan counting down to a May 28 launch aboard a Soyuz rocket to join their orbiting crewmates.
Soyuz Commander Fyodor Yurchikhin and Flight Engineers Karen Nyberg and Luca Parmitano will enter their Soyuz TMA-09M spacecraft for a 4:31 p.m. EDT launch, and dock just four orbits – or about six hours – later.
Asteroid 1998 QE2 to Sail Past Earth
On May 31, 2013, asteroid 1998 QE2 will sail serenely past Earth, getting no closer than about 3.6 million miles (5.8 million kilometers), or about 15 times the distance between Earth and the moon. And while QE2 is not of much interest to those astronomers and scientists on the lookout for hazardous asteroids, it is of interest to those who dabble in radar astronomy and have a 230-foot (70-meter) -- or larger -- radar telescope at their disposal.
