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E.g., 11/22/2018
E.g., 11/22/2018
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Your search has returned 885 articles:
  • News

    An orbiter glitch may mean some signs of liquid water on Mars aren’t real

    Some signs of water on Mars may have just dried up.

    Thanks to the way data from NASA’s Mars Reconnaissance Orbiter are handled, the spacecraft may be seeing signs of hydrated salts that aren’t really there, planetary scientists report online November 9 in Geophysical Research Letters.

    That lack of salts could mean that certain sites proposed as places where life could exist on Mars...

    11/21/2018 - 14:30 Planetary Science
  • News in Brief

    NASA’s Mars 2020 rover will look for ancient life in a former river delta

    The next NASA Mars rover will hunt for signs of ancient life in what used to be a river delta, the agency announced on November 19.

    The rover is expected to launch in July 2020 and to land on Mars around February 18, 2021. It will seek out signs of past life in the sediments and sands of Jezero crater, which was once home to a 250-meter-deep lake and a river delta that flowed into the...

    11/19/2018 - 15:36 Planetary Science, Astrobiology
  • News

    Tiny satellites will relay news of InSight’s Mars landing in minutes, not hours

    The next spacecraft set to land on Mars is bringing its own communications team. InSight, a lander scheduled to touch down on the Red Planet on November 26, is accompanied by a pair of briefcase-sized spacecraft that will send details of the landing to Earth in almost real time.

    The twin craft on this mission are CubeSats — tiny, inexpensive satellites that are easy to build and launch....

    11/18/2018 - 07:00 Planetary Science
  • News

    Astronomers spot another star that flickers like Tabby’s star

    There’s another oddly flickering star in the galaxy.

    Astronomers using a telescope in Chile have discovered a star whose strange dimming and brightening of light are reminiscent of Tabby’s star, which was once suggested to host an alien megastructure.

    The megastructure idea, first posited in 2015, was later quashed by data suggesting that the dips are probably from dust particles...

    11/16/2018 - 10:14 Astronomy, Planetary Science
  • Introducing

    One of Earth’s shimmering dust clouds has been spotted at last

    Meet the Kordylewski dust clouds, shimmering pseudo-satellites that orbit Earth near the moon. A team of Hungarian astronomers say they have spotted light scattered from one of these clouds, providing evidence that the clouds really exist after nearly 60 years of controversy.

    The twin dust clouds gather at two of the points in space where the gravity of Earth and the moon cancel each...

    11/13/2018 - 06:00 Astronomy, Planetary Science
  • News

    China is about to visit uncharted territory on the moon

    China is about to make space history. In December, the country will launch the first spacecraft ever to land on the farside of the moon. Another craft, slated for takeoff in 2019, will be the first to bring lunar rocks back to Earth since 1976.

    These two missions — the latest in China’s lunar exploration series named after the Chinese moon goddess, Chang’e — are at the forefront of...

    11/11/2018 - 07:00 Planetary Science
  • News

    Hints of Oort clouds around other stars may lurk in the universe’s first light

    A thick sphere of icy debris known as the Oort cloud shrouds the solar system. Other star systems may harbor similar icy reservoirs, and those clouds may be visible in the universe’s oldest light, researchers report.

    Astronomer Eric Baxter of the University of Pennsylvania and colleagues looked for evidence of such exo-Oort clouds in maps of the cosmic microwave background, the cool...

    11/09/2018 - 06:00 Planetary Science, Exoplanets, Cosmology
  • News

    Dawn, the first spacecraft to orbit 2 alien worlds, has gone silent

    It’s dusk for Dawn.

    The NASA spacecraft that was the first to orbit two worlds in one mission has sent its final messages back to Earth, mission managers announced November 1.

    The spacecraft missed two check-ins with NASA’s Deep Space Network on October 31 and November 1, scientists say. That silence likely means Dawn ran out of the hydrazine that fuels its thrusters, which help...

    11/01/2018 - 17:27 Planetary Science
  • News

    Saturn’s moon Dione has stripes like no others in the solar system

    Saturn’s moon Dione is streaked with long bright stripes, and no one knows how they got there.

    Planetary scientists first noticed the stripes in pictures taken with NASA’s Cassini spacecraft, which orbited Saturn from 2004 to 2017 (SN: 4/14/18, p. 6). Found near the moon’s equator, the long, thin, bright lines run surprisingly parallel to each other for tens to hundreds of kilometers....

    10/23/2018 - 13:52 Planetary Science
  • News

    Spiky ice spires may stud the equator of Jupiter’s moon Europa

    Europa’s frozen landscape could be treacherous territory for future lunar landers.

    Jagged spires of ice may stud the Jovian moon’s equator, researchers report October 8 in Nature Geosciences. These structures, called penitentes, could reach heights of 15 meters and occur roughly every 7.5 meters, computer simulations show, potentially rendering parts of the moon unnavigable in future...

    10/08/2018 - 11:00 Planetary Science