NASA's Jet Propulsion Laboratory News and Features 24 Jul 2017, 20:34 UTC With the push of a button, final commands for the European Space Agency's LISA Pathfinder mission were beamed to space on July 18, a final goodbye before the spacecraft was powered down.
NASA's Jet Propulsion Laboratory News and Features 24 Jul 2017, 17:52 UTC As NASA's Cassini spacecraft makes its unprecedented series of weekly dives between Saturn and its rings, scientists are finding -- so far -- that the planet's magnetic field has no discernable tilt. This surprising observation, which means the true length of Saturn's day is still unknown, is just one of several early insights from the final phase of Cassini's mission, known as the Grand Finale.
NASA's Goddard Space Flight Center 24 Jul 2017, 13:56 UTC The space surrounding our planet is full of restless charged particles and roiling electric and magnetic fields, which create waves around Earth. One type of wave, plasmaspheric hiss, is particularly important for removing charged particles from the Van Allen radiation belts, a seething coil of particles encircling Earth, which can interfere with satellites and telecommunications. A new study published in Journal of Geophysical Research using data from NASA’s Van Allen Probes spacecraft has discovered that hiss is more complex than previously understood.
NASA Breaking News 21 Jul 2017, 17:10 UTC More than 300 million people in the United States potentially could directly view the Aug. 21 total solar eclipse, and NASA wants everyone who will witness this celestial phenomenon to do so safely.
NASA's Goddard Space Flight Center 21 Jul 2017, 14:52 UTC Tucked away in the small northern constellation of Canes Venatici (The Hunting Dogs) is the galaxy NGC 4242, shown here as seen by the NASA/ESA Hubble Space Telescope. The galaxy lies some 30 million light-years from us. At this distance from Earth, actually not all that far on a cosmic scale, NGC 4242 is visible to anyone armed with even a basic telescope, as British astronomer William Herschel found when he discovered the galaxy in 1788.
NASA's Jet Propulsion Laboratory News and Features 20 Jul 2017, 19:07 UTC
HubbleSite NewsCenter -- Latest News Releases 20 Jul 2017, 17:00 UTC While photographing Mars, NASA’s Hubble Space Telescope captured a cameo appearance of the tiny moon Phobos on its trek around the Red Planet. Discovered in 1877, the diminutive, potato-shaped moon is so small that it appears star-like in the Hubble pictures. Phobos orbits Mars in just 7 hours and 39 minutes, which is faster than Mars rotates. The moon’s orbit is very slowly shrinking, meaning it will eventually shatter under Mars’ gravitational pull, or crash into the planet. Hubble took 13 separate exposures over 22 minutes to create a time-lapse video showing the moon’s orbital path.
Europlanet Research Infrastructure 20 Jul 2017, 09:57 UTC The first observing run of a collaboration between amateur and professional astronomers to monitor our planetary neighbours has resulted in some of the best planetary images ever taken from the ground.
Harvard-Smithsonian Center for Astrophysics 19 Jul 2017, 18:10 UTC Physicists are capitalizing on a direct connection between the largest cosmic structures and the smallest known objects to use the universe as a "cosmological collider" and investigate new physics.