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Galileo Would Be Stunned: Jupiter Now Has 79 Moons

By Joe Palca
The planet Jupiter now has a total of 79 identified moons.

Astronomers have found 12 more moons orbiting the planet Jupiter. These moons are all small — just 5 kilometers or less across — and one of them behaves very strangely.

(Image credit: QAI Publishing/UIG via Getty Images)

  • July 17th 2018 at 16:39

A 4 Billion Light-Year Journey Ends At The South Pole

By Joe Palca
This artist

Ghostly particles called neutrinos can travel nearly unimpeded across the universe. For the first time, physicists have been able to pinpoint the origin of a powerful neutrino.

(Image credit: ESA/NASA/the AVO project/Paolo Padovani)

  • July 12th 2018 at 17:01

NASA Needs Backup Plan To Maintain U.S. Presence At Space Station, Watchdog Says

By Giles Snyder
International Space Station (ISS), computer artwork.

The Government Accountability Office released a report warning NASA that further delays in the space agency's commercial crew program could keep American astronauts from reaching the space station.

(Image credit: Sciepro/Getty Images/Science Photo Library RF)

  • July 12th 2018 at 11:22

In 'Light Of The Stars,' Adam Frank Studies Alien Worlds To Find Earth's Fate

Astrophysicist Adam Frank has a new book out, Light of the Stars: Alien Worlds and the Fate of the Earth. He talks to NPR's Mary Louise Kelly about it.

  • July 5th 2018 at 22:48

LOOK: Hot, Young Stars Form 'Celestial Fireworks'

By Merrit Kennedy
NASA has released a fireworks-like image of a nebula in the constellation Carina.

NASA posted the glittery image of stars that "live fast and die young" on the eve of Independence Day. It shows a cluster of "huge, hot" stars called NGC 3603, about 20,000 light years away.

(Image credit: NASA, ESA, R. O'Connell (University of Virginia), F. Paresce (National Institute for Astrophysics, Bologna, Italy), E. Young (Universities Space Research Association/Ames Research Center), the WFC3 Science Oversight Committee, and the Hubble Heritage Team)

  • July 4th 2018 at 22:15

Scientists Capture First Birth Of A Planet

By Clare Lombardo
When she saw photos of the young planet PDS 70 b, "It looked so clear," says Miriam Keppler, who led a team in the discovery.

Photographs of a young planet orbiting a star provide useful information about how planets form and grow.

(Image credit: ESO/A. Muller et al.)

  • July 3rd 2018 at 00:16

Japan's Hayabusa2 Spacecraft Arrives At Its Asteroid Destination

By Bill Chappell
Asteroid Ryugu, photographed on June 26 by the Hayabusa2 spacecraft, was the Japanese mission

The mission includes a plan to bring a sample back to Earth. It's the first time humans have been able to study a C-type asteroid at such a close range for an extended period.

(Image credit: JAXA, University of Tokyo and collaborators)

  • June 27th 2018 at 17:56

How To Find The Summer Constellations (360ยฐ Video)

By Adam Cole
The constellation Leo can be found by following guide stars in the Big Dipper.

Have you ever wanted to casually point out Cygnus, Leo and Cassiopeia? Just in time for summer, this panoramic video shows you some tricks to help you navigate the night sky.

(Image credit: Adam Cole/NPR's Skunk Bear)

  • June 26th 2018 at 11:00

Mars Dust Storm Now 'Planet-Encircling,' Dimming Hopes For NASA Rover

By Amy Held
A dust storm has reduced sunlight and visibility on Mars. But NASA

As the dust storm grows and the solar-paneled Opportunity remains asleep, the younger Curiosity rover has been able to power through.

(Image credit: NASA/JPL-Caltech via AP)

  • June 22nd 2018 at 01:23

Giant Dust Storm On Mars Threatening To End NASA's Opportunity Rover

By Joe Palca
Global map of Mars showing a growing dust storm as of June 6, 2018. The map was produced by the Mars Color Imager (MARCI) camera on NASA

The rover has shut itself down because the solar panels aren't getting enough sunlight to charge the batteries. If the storm persists, the rover mission may be over, ending a 14-year run.

(Image credit: NASA/JPL-Caltech/MSSS)

  • June 13th 2018 at 22:48

Enormous Dust Storm On Mars Threatens The Opportunity Rover

By Camila Domonoske
These two views from NASA

With the sun entirely blocked out by dust, the solar-powered rover has presumably fallen asleep to wait out the storm. NASA scientists say they are "very concerned," but that they hope for the best.

(Image credit: NASA/JPL-Caltech/MSSS)

  • June 13th 2018 at 20:26

NASA's Curiosity Rover Finds Chemical Building Blocks For Life On Mars

By Joe Palca
Two rock samples taken by NASA

Scientists can't say whether there is, or ever was, life on the Red Planet. But two Martian rock samples contained organic molecules — which contain carbon, the chemical element central to life.

(Image credit: NASA/JPL-Caltech/MSSS)

  • June 7th 2018 at 23:05

Space Station For Sale: NASA Administrator Is In Talks With International Companies

By Cameron Jenkins
NASA Administrator Jim Bridenstine is in talks with international companies who might want to take over management of the International Space Station.

NASA's Jim Bridenstine says he is interested in private corporations taking over management of the International Space Station consortium.

(Image credit: Jim Watson/AFP/Getty Images)

  • June 6th 2018 at 03:37

Alan Bean, Apollo 12 Astronaut Who Walked On The Moon, Dies At 86

By Russell Lewis
Astronaut Alan Bean was photographed by Charles "Pete" Conrad Jr., who is reflected in Bean

Bean was the lunar module pilot of Apollo 12, which made the second moon landing, in 1969. Later in life, as a painter, he chronicled the people and experience of the Apollo program.

(Image credit: Charles "Pete" Conrad Jr./NASA)

  • May 26th 2018 at 20:01

NASA Launching New Satellites To Measure Earth's Lumpy Gravity

By Christopher Joyce
The Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) mission, shown in an artist

The two satellites, which are collectively called GRACE and will replace two retired probes, are one of the most important tools for understanding the effects of climate change.

(Image credit: NASA/JPL)

  • May 21st 2018 at 20:45

Trump Hints At Plan To Create 'Space Force' As Sixth Military Branch

By Samantha Raphelson
U.S. Marine Drum and Bugle Corps and Color Guard march past the space shuttle Enterprise at the Steven F. Udvar-Hazy Center on April 19, 2012, in Chantilly, Va.

While the Pentagon opposes the measure, the military has conducted operations in space for 50 years.

(Image credit: NASA/Getty Images)

  • May 21st 2018 at 19:38

Asteroid Will Pass Between The Earth And The Moon Tuesday (Don't Panic)

By Bill Chappell
The orbit of the Earth (blue line) and its near-intersection with Asteroid 2010 WC9 (in white) is seen in this diagram by the Jet Propulsion Laboratory.

First spotted in 2010, a space rock is zooming toward Earth, making a close pass on Tuesday that will see it fly safely by — about halfway between our planet and the moon.

(Image credit: NASA/Jet Propulsion Laboratory)

  • May 15th 2018 at 18:50

Asteroid Will Pass Between The Earth And Sun Tuesday (Don't Panic)

By Bill Chappell
The orbit of the Earth (blue line) and its near-intersection with Asteroid 2010 WC9 (in white) is seen in this diagram by the Jet Propulsion Laboratory.

First spotted in 2010, a space rock is zooming toward Earth, making a close pass on Tuesday that will see it fly safely by - about halfway between our planet and the moon.

(Image credit: NASA/Jet Propulsion Laboratory)

  • May 15th 2018 at 18:50

Icy Moon Of Jupiter Spews Water Plumes Into Space

By Joe Palca
This is an artist

Researchers have evidence supporting the existence of plumes of water shooting up from the interior of Jupiter's icy moon Europa.

(Image credit: NASA, ESA, and K. Retherford)

  • May 14th 2018 at 17:01

Earth's 'Bigger, Older Cousin' Maybe Doesn't Even Exist

By Nell Greenfieldboyce
The planet, known as Kepler-452b, was believed to be about 60 percent larger than our planet and within the habitable zone of its star.

In 2015, to great fanfare, NASA announced a planet discovery considered a milestone in the hunt for another Earth. But now some researchers say it's not clear that this planet actually exists.

(Image credit: NASA Ames/JPL-Caltech/T. Pyle)

  • May 11th 2018 at 18:44
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