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E.g., 08/18/2019
Your search has returned 558 images:
  • Buzz Aldrin on the moon
  • Lisa with moon rocks
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Your search has returned 1852 articles:
  • Letters to the Editor

    Readers wanted to know about asteroids, lithium batteries and more

    Heat keepers

    Long ago, molten iron could have erupted from metal asteroids in a process scientists refer to as ferrovolcanism, Lisa Grossman reported in “Metal asteroids may have once had iron-spewing volcanoes (SN: 5/11/19 & 5/25/19, p. 5). 

    “In the cold vastness of space, how long are these rocks expected to keep their thermal energy?” asked online reader Bronze Condor.

    ...

    07/06/2019 - 06:15 Planetary Science, Earth, Neuroscience
  • News in Brief

    With Dragonfly, NASA is heading back to Saturn’s moon Titan

    Fifty years after Apollo 11, NASA is gearing up for a whole new kind of moonshot. The agency’s next solar system exploration mission will send a drone-like rotorcraft to Saturn’s largest moon, Titan, NASA announced June 27 in a news teleconference.

    “Titan is unlike any other place in our solar system, and the most comparable to early Earth,” NASA Administrator Jim Bridenstine said at the...

    06/27/2019 - 18:16 Planetary Science
  • News

    How NASA’s portable atomic clock could revolutionize space travel

    Traveling the solar system could one day be as easy as taking a bus to work. Scientists envision self-driving spaceships ferrying astronauts through deep space, and GPS-like systems guiding visitors across the terrains of other planets and moons. But for those futuristic navigation schemes, spacecraft and satellites would need to be equipped with clocks that keep time with extreme precision —...

    06/21/2019 - 07:00 Technology, Planetary Science
  • News in Brief

    Table salt may be hiding in Europa’s underground sea

    What flavors our food may also season the sea of Jupiter’s moon Europa.

    Sulfate salts were thought to lurk in the watery ocean under the moon’s icy crust. But data from the Hubble Space Telescope suggest that common table salt dominates the sea’s chemistry, researchers report June 12 in Science Advances.

    “This could mean that the ocean chemistry is more similar to what we’re used...

    06/14/2019 - 11:02 Astronomy, Planetary Science
  • News

    Icy volcanoes on Pluto may have spewed organic-rich water

    Red ice found on Pluto suggests the dwarf planet recently spewed fountains of water into space. And it hints at complex — and possibly organic — chemistry in Pluto’s salty subsurface sea, researchers report May 29 in Science Advances.

    “This was a huge surprise to all of us about Pluto,” says planetary scientist Dale Cruikshank of the NASA Ames Research Center in Moffett Field, Calif. “It...

    05/29/2019 - 14:00 Planetary Science
  • News

    China’s lunar rover may have found minerals from the moon’s mantle

    The first mission to the farside of the moon may have found bits of the moon’s interior on its surface.

    The Yutu-2 rover, deployed by the Chinese Chang’e-4 spacecraft that landed on the moon in January, detected soil that appears rich in minerals thought to make up the lunar mantle, researchers report in the May 16 Nature. Those origins, if confirmed, could offer insight into the moon’s...

    05/15/2019 - 13:00 Planetary Science
  • News

    Apollo-era moonquakes reveal that the moon may be tectonically active

    The moon may still be kicking.

    Rumbles recorded decades ago by seismometers at Apollo landing sites are probably linked to young faults mapped by NASA’s Lunar Reconnaissance Orbiter, scientists say. Eight of those moonquakes occurred within 30 kilometers of fault scarps, steplike cliffs on the lunar crust that mark places where one side of a fault has thrust up or slipped down. If true,...

    05/13/2019 - 11:00 Planetary Science
  • News

    Water has been found in the dust of an asteroid thought to be bone-dry

    For the first time, evidence of water has been found in a stony type of asteroid once thought to be bone-dry.

    Grains of dust from the asteroid Itokawa actually contain a surprising amount of water, two cosmochemists from Arizona State University in Tempe report May 1 in Science Advances.

    “We didn’t really expect water to be there in Itokawa at all,” says study coauthor Maitrayee...

    05/01/2019 - 14:00 Planetary Science
  • News

    Skepticism grows over whether the first known exomoon exists

    Hopes that astronomers found a moon orbiting a planet outside our solar system may be slowly dimming.

    Two different groups of researchers took another look at data to search for a telltale dip in starlight that could suggest a moon was passing in front of the star Kepler 1625. Their conflicting results raise questions about whether the exomoon exists.

    “When I reanalyzed the data, I...

    04/30/2019 - 12:30 Astronomy, Planetary Science
  • News in Brief

    Pictures confirm Hayabusa2 made a crater in asteroid Ryugu

    Hayabusa2 has successfully blasted a crater into the asteroid Ryugu. On April 25 Japan time, the spacecraft flew over the spot where it had dropped a projectile three weeks earlier and took pictures of the impact (SN Online: 4/5/19).

    “We have confirmed that an artificial crater was created,” JAXA, Japan’s space agency, reports based on a comparison of before and after images. “The size...

    04/26/2019 - 12:09 Planetary Science