"Professor Goddard does not know the relation between action and reaction and the need to have something better than a vacuum against which to react. He seems to lack the basic knowledge ladled out daily in high schools."
--1921 New York Times editorial about Robert Goddard's revolutionary rocket work.

"Correction: It is now definitely established that a rocket can function in a vacuum. The 'Times' regrets the error."
NY Times, July 1969.

— New York Times

NASA

NASA TV to Air Departure of Japanese Cargo Ship from Space Station

NASA - Breaking News - 3 hours 6 min ago
Eleven years after the launch of the first H-II Transfer cargo vehicle (HTV) to the International Space Station, the Japan Aerospace Exploration Agency’s (JAXA’s) HTV-9 will depart the orbital laboratory Tuesday, Aug. 18, with live coverage beginning at 1:15 p.m. EDT on NASA Television and the agency’s website.
Categories: NASA

Hubble Finds that Betelgeuse's Mysterious Dimming Is Due to a Traumatic Outburst

Hubblesite Newscenter - 7 hours 10 min ago

The aging, bright-red supergiant star Betelgeuse has captivated sky watchers since antiquity. The ancient astronomer Ptolemy was one of the first to note the monster star's red color. It is one of the brightest stars in the night sky and appears even more luminous because it is so close to Earth, only 725 light-years away.

But the star also periodically changes in brightness, which was first noted in the 1830s by British astronomer John Herschel. Astronomers now know that the star expands and contracts, brightening and dimming, on a 420-day cycle.

However, in October 2019, the star dimmed dramatically and continued to become even fainter. By mid-February 2020, the monster star had lost more than two-thirds of its brilliance.

This sudden dimming has mystified astronomers, who scrambled to develop several theories for the abrupt change. Ultraviolet observations by the Hubble Space Telescope suggest that the unexpected dimming was probably caused by an immense amount of superhot material ejected into space. The material cooled and formed a dust cloud that blocked the starlight coming from about a quarter of Betelgeuse's surface.

Hubble captured signs of dense, heated material moving through the star's atmosphere in September, October, and November 2019. Then, in December, several ground-based telescopes observed the star decreasing in brightness in its southern hemisphere.

The giant star is destined to end its life in a supernova blast. Some astronomers think the sudden dimming may be a pre-supernova event. Betelgeuse resides in Orion, one of the most recognizable constellations in the sky. The mammoth star marks the right shoulder of the hunter.

Categories: NASA

The Shifting Tails of Comet NEOWISE

APOD - 14 hours 10 min ago

Keep your eye on the ion tail of Comet NEOWISE.


Categories: Astronomy, NASA

Churning Clouds on Jupiter

APOD - 14 hours 10 min ago

Where is Jupiter's ammonia?


Categories: Astronomy, NASA

Perseids from Perseus

APOD - 14 hours 10 min ago

Where are all these meteors coming from?


Categories: Astronomy, NASA

The Origin of Elements

APOD - 14 hours 10 min ago

The hydrogen in your body, present in every molecule of water, came from the


Categories: Astronomy, NASA

Crescent Saturn

APOD - 14 hours 10 min ago

From Earth, Saturn never shows a crescent phase.


Categories: Astronomy, NASA

The Pipe Nebula

APOD - 14 hours 10 min ago

East of Antares,


Categories: Astronomy, NASA

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APOD - 14 hours 10 min ago

What planets are those behind that unusual rock spire?


Categories: Astronomy, NASA

Candy-Colored Phobos

NASA Image of the Day - Wed, 08/12/2020 - 9:04am
As of March 2020, our Mars Odyssey has captured these six views of the Martian moon Phobos.
Categories: Astronomy, NASA

Messier 20 and 21

APOD - Wed, 08/12/2020 - 12:00am

Messier 20 and 21


Categories: Astronomy, NASA

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APOD - Wed, 08/12/2020 - 12:00am

Ancient sun daggers will not hurt you, but they may tell you the time. 


Categories: Astronomy, NASA

This Gas Giant Is Pretty in Pink

NASA Image of the Day - Tue, 08/11/2020 - 9:42am
If humans could travel to this giant planet, we would see a world still glowing from the heat of its formation with a color reminiscent of a dark cherry blossom, a dull magenta.
Categories: Astronomy, NASA

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APOD - Mon, 08/10/2020 - 8:00pm

Distorted galaxy NGC 2442 can be found in the southern constellation of the


Categories: Astronomy, NASA

One Rehearsal Away from Touching Asteroid Bennu

NASA Image of the Day - Mon, 08/10/2020 - 10:10am
NASA's OSIRIS-REx is ready for touchdown on asteroid Bennu.
Categories: Astronomy, NASA

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APOD - Sun, 08/09/2020 - 4:00pm

Did the Earth part to show us this comet?


Categories: Astronomy, NASA

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APOD - Sat, 08/08/2020 - 12:00pm

How different does sunset appear from Mars than from Earth?


Categories: Astronomy, NASA

NASA Astronaut Aboard Space Station to Answer Girl Scouts’ Questions

NASA - Breaking News - Fri, 08/07/2020 - 4:19pm
Girl Scouts from across the nation will pose questions next week to NASA astronaut Chris Cassidy aboard the International Space Station.
Categories: NASA

NASA Awards Contract for Consolidated Information Technology Services

NASA - Breaking News - Fri, 08/07/2020 - 3:21pm
NASA has selected ASRC Federal Data Solutions (AFDS) Inc. of Beltsville, Maryland, to receive a contract for Ames Consolidated Information Technology Services at the agency's Ames Research Center in Moffett Field, California.
Categories: NASA

NASA Awards Laboratory Services Contract

NASA - Breaking News - Fri, 08/07/2020 - 3:06pm
NASA has awarded the Laboratory Services contract (LSC) to Alutiiq Essentials Services LLC of Kodiak, Alaska, to provide laboratory services at NASA’s Stennis Space Center near Bay St. Louis, Mississippi, and NASA’s Michoud Assembly Facility in New Orleans.
Categories: NASA