Scientists have seen auroras dancing around above the giant ice planet Uranus by using the Hubble Space Telescope.

The idea of compressing water is foreign to our daily experience. Nevertheless, an accurate estimate of water’s shrinking volume under the huge gravitational pressures of large planets is essential to astrophysicists trying to model the evolution of the universe.

In order to reduce power consumption, mission managers have turned off a heater on part of NASA's Voyager 1 spacecraft, dropping the temperature of its ultraviolet spectrometer instrument more than 23 degrees Celsius (41 degrees Fahrenheit).

NASA's Voyager 1 spacecraft has entered a new region between our solar system and interstellar space.

WASHINGTON, Dec. 5, 2011 /PRNewswire-USNewswire/ -- NASA's Voyager 1 spacecraft has entered a new region between our solar system and interstellar space.