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How was the unusual Red Rectangle nebula created?

The Waterfall and the World at Night

How was the unusual Red Rectangle nebula created?

Our Sun is not a giant blueberry.

Swinging around the Sun's eastern limb on Monday,

This image of the storm system that generated the F-4 tornado in Moore, Oklahoma was taken by NASA's Moderate Resolution Imaging Spectroradiometer (MODIS) instrument aboard one of the Earth Observing System (EOS) satellites. The image was captured on May 20, 2013, at 19:40 UTC (2:40 p.m. CDT) as the tornado began its deadly swath. Image Credit: NASA/Goddard/Jeff Schmaltz/MODIS Land Rapid Response Team

NASA Expedition 35 astronaut and flight engineer Chris Cassidy will speak live from the International Space Station with students at Talbot Innovation Middle School in Fall River, Mass., at 10:05 a.m. EDT, Thursday, May 23.

NASA's Mars rover Curiosity has used the drill on its robotic arm to collect a powdered sample from the interior of a rock called "Cumberland."

What on Earth is that?

What caused this mess?

NASA and President Obama are honoring the life and legacy of Sally Ride on the day a national tribute was held for the first American woman in space.

NASA and Bigelow Aerospace of Las Vegas are holding a media availability at 1:30 p.m. EDT, Thursday, May 23, to discuss the agency's Space Act Agreement with the company for its insight on collaborating with commercial industry on exploration beyond Earth orbit. Journalists can participate in-person or by teleconference.

The Aerospace Club of Vanderbilt University in Nashville, Tenn., took first prize in the 2013 annual NASA Student Launch Projects challenge, in which student teams design, build and fly small rockets with science payloads to an altitude of 1 mile and return them safely to Earth.

NASA Administrator Charles Bolden will hold media availabilities at all three of the agency's centers in California this week, highlighting progress on the asteroid mission, commercial crew transportation and space technology development.

NASA's Johnson Space Center in Houston will host a news conference and social media event at 1 p.m. CDT (2 p.m. EDT) Wednesday, May 22, to preview the upcoming Expedition 36 mission aboard the International Space Station.

NASA and Sally Ride Science are inviting journalists to tonight's "Sally Ride: A Lifetime of Accomplishment, A Champion of Science Literacy," a national tribute to America's first woman in space. The special event will be held at the Concert Hall of the John F. Kennedy Center for the Performing Arts, 2700 F Street, N.W., Washington, D.C., at 7 p.m. EDT.

The Twin Rectangular Jet model, installed on the Nozzle Acoustic Test Rig in the Aeroacoustic Propulsion Laboratory at NASA's Glenn Research Center, is being tested to determine the acoustic impact of engine configurations on low sonic boom aircraft for the High Speed Project of the Fundamental Aeronautics Program. The High Speed Project is a multi-center effort to develop and test the technologies of a new generation of aircraft that can fly at supersonic speeds. Glenn's research involves predicting the airport noise of these novel aircraft by examining innovative airframes and propulsion integration that are different from the conventional tube-and-wing aircraft observed at commercial airports. Inside the aeroacoustic dome, this generic, low-fidelity aircraft engine exhaust model features twin rectangular nozzles. Researchers are investigating the impact of having the propulsive exhaust come from the slot nozzles atop the aircraft. Testing the proposed components of these high- speed aircraft will help manufacturers meet the noise standards required around the nation's airports. Image Credit: NASA/Bridget R. Caswell