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Why Corned Beef Sandwiches โ€” And The Rest Of The Universe โ€” Exist

By Joe Palca
An imbalance between matter and antimatter in the universe produced all the things in existence, including corned beef sandwiches.

Somehow, at the beginning of time, there was an imbalance of matter and antimatter. That's how all the stuff in the universe came about. Scientists think they may find an answer by studying neutrons.

(Image credit: Erik Rank/Getty Images)

  • May 25th 2019 at 14:20

Phil Plait: How Can Mistakes Lead To Scientific Advancement?

By NPR/TED Staff
Phil Plait

When it comes to scientific research, mistakes are not only part of—but also crucial—to the process. Phil Plait explains how small setbacks can play a critical role in making big discoveries.

(Image credit: Phil Plait)

  • May 24th 2019 at 15:18

NASA Wants To Send Your Name To Mars In 2020

By Joe Palca
Boarding Pass for Mars

NASA wants you to go to Mars...at least, they want your name to go. As part of a publicity campaign, the public can fill out a form and have a name coded on a microchip to head up in 2020.

(Image credit: nasa.gov)

  • May 22nd 2019 at 22:16

Asteroid Simulation Reveals How Well Earth's Planetary Defenses Work

By Nell Greenfieldboyce

Asteroid experts have been simulating a large asteroid heading towards Earth. Friday is the conclusion to the realistic simulation and will reveal how well planetary defense efforts work in this scenario.

  • May 4th 2019 at 01:34

NASA Warns About Threat Of Meteors

NASA Administrator Jim Bridenstine said meteor impacts happen more frequently than the general public knows.

  • May 1st 2019 at 11:10

This Week, NASA Is Pretending An Asteroid Is On Its Way To Smack The Earth

By Nell Greenfieldboyce
A stripe of red dots shows the risk corridor for a hypothetical asteroid strike, part of an exercise this week held by planetary defense experts in which they analyze data about a fictitious asteroid.

A fictitious asteroid is the focus of a realistic exercise, as experts at the Planetary Defense Conference run through how they would respond to news of a looming asteroid strike.

(Image credit: Landsat/Copernicus/Google Earth/Dept. of State Geographer)

  • April 29th 2019 at 20:26

NASA's InSight Probe May Have Recorded First Sounds Of Marsquake

By Joe Palca
InSight seismometer with protectiive wind cover deployed on Mars.

A NASA probe called InSight is on Mars listening for marsquakes and it seems it has detected the first sounds of a quake, probably.

(Image credit: NASA/JPL-Caltech)

  • April 24th 2019 at 23:14

Former Astronaut On Watching For Life-Destroying Objects From Space

NPR's Lulu Garcia-Navarro talks to former astronaut Ed Lu, who co-founded a planetary defense nonprofit, about a meteor that exploded with the energy of 10 atomic bombs over the Bering Sea.

  • April 21st 2019 at 13:46

Do You Love Lying In Bed? Get Paid By NASA To Do It For Space Research

By Sacha Pfeiffer
South Korean President Park Geun-hye walks past a NASA logo during a tour at the agency

Researchers are currently looking for candidates who will stay in bed 24 hours a day, seven days a week for 60 straight days for a study on how the body adapts to weightlessness.

(Image credit: Patrick Semansky/AP)

  • April 15th 2019 at 02:31

Get Paid To Stay In Bed, For Space Science

NPR's Sacha Pfeiffer speaks with Jennifer Ngo-Anh of the European Space Agency about their planned study during which subjects will stay in bed for two months.

  • April 14th 2019 at 14:03

Scientists Share Results From NASA's Twins Study

During astronaut Scott Kelly's nearly year-long space flight on the International Space Station, NASA scientists measured physiological changes in him and his earthbound twin, Mark Kelly.

  • April 12th 2019 at 11:11

Israeli Robotic Moon Landing Fails In Final Descent

By Richard Gonzales
People in the Israeli city of Netanya watching images taken by the camera of the Israel Beresheet spacecraft of the moon surface before it crashed.

Israeli scientists are studying what caused an engine failure in the closing minutes of what they hoped would be a historic lunar landing.

(Image credit: Jack Guez/AFP/Getty Images)

  • April 11th 2019 at 23:53

Scientists Have Taken The First Photo Of Something That's Invisible โ€” A Black Hole

By Nell Greenfieldboyce

The swirling mass around a black hole is called an "event horizon," the point of no return beyond which not even light can escape. Scientists unveiled the first image of this on Wednesday.

  • April 10th 2019 at 22:25

Earth Sees First Image Of A Black Hole

By Bill Chappell
The first-ever image of a black hole was released Wednesday by a consortium of researchers, showing the "black hole at the center of galaxy M87, outlined by emission from hot gas swirling around it under the influence of strong gravity near its event horizon."

Every image you've ever seen of a black hole has been a simulation. Until now. "We have seen what we thought was unseeable," said Event Horizon Telescope Director Shep Doeleman.

(Image credit: Event Horizon Telescope collaboration et al)

  • April 10th 2019 at 14:56

Juno Flies By Jupiter

NPR's Lulu Garcia-Navarro asks NASA scientist Steven Levin about the spacecraft Juno's latest Jupiter fly-by, occurring this weekend.

  • April 7th 2019 at 14:05

Japan (Very Carefully) Drops Plastic Explosives Onto An Asteroid

By Geoff Brumfiel
Japan

The device was detonated as part of a mission to better understand the origins of planets.

(Image credit: JAXA/Akihiro Ikeshita)

  • April 5th 2019 at 19:31

NASA: Debris From India's Anti-Satellite Test Raised Threat To Space Station

By Bill Chappell
India launched a ballistic missile defense interceptor last week — and NASA says it created dangerous debris in orbit. "We have identified 400 pieces of orbital debris from that one event," NASA Administrator Jim Bridenstine said.

"That is a terrible, terrible thing to create an event that sends debris in an apogee that goes above the International Space Station," NASA Administrator Jim Bridenstine said.

(Image credit: Handout /Reuters)

  • April 2nd 2019 at 16:26

Young Astronomer Uses Artificial Intelligence To Discover 2 Exoplanets

By Joe Palca
This illustration made available by NASA shows the Kepler space telescope, the planet-hunting spacecraft that launched in 2009.

A team led by an undergraduate student at the University of Texas, Austin has found two new planets by using artificial intelligence to sift through data from NASA's planet-hunting Kepler telescope.

(Image credit: NASA via AP)

  • April 1st 2019 at 11:07

How A Cosmic Collision Sparked A Native American Translator's Labor Of Love

By Nell Greenfieldboyce
Scientist Corey Gray and his mother, Sharon Yellowfly, are pictured at one of the two massive detectors that make up the Laser Interferometer Gravitational-Wave Observatory. One facility, where Gray works, is in Washington state, and the other is in Louisiana.

On April 1, astronomers will start two huge machines and continue hunting for ripples in space-time. One scientist gets his mom to translate news of each discovery into her native language, Blackfoot.

(Image credit: Courtesy of Russell Barber)

  • March 31st 2019 at 23:17

India Claims Successful Test Of Anti-Satellite Weapon

By Geoff Brumfiel
Experts believe the target of Wednesday

New Delhi says it destroyed one of its own satellites in orbit, making India only the fourth country to test such a weapon.

(Image credit: Arun Sankar/AFP/Getty Images)

  • March 27th 2019 at 18:21
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