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This Week in NASA History: HEAO-1 Launches In Search of X-ray and Gamma-ray Sources — Aug. 12, 1977
This Week in NASA History: HEAO-1 Launches In Search of X-ray and Gamma-ray Sources — Aug. 12, 1977

This week in 1977, the first of three spacecraft in NASA’s High Energy Astronomy Observatory program, HEAO-1, was launched from…

Smoke from Fires on Mainland Portugal
Smoke from Fires on Mainland Portugal

Several fires continue raging on Portugal’s mainland in addition to those on nearby Madeira Island. Smoke from several of those…

Portugal’s Madeira Island Fire Raging
Portugal’s Madeira Island Fire Raging

Smoke from several large fires burning on Portugal’s Madeira Island were seen blowing over the Atlantic Ocean on Aug. 10…

A Black Hole Story Told by a Cosmic Blob and Bubble
A Black Hole Story Told by a Cosmic Blob and Bubble

Two cosmic structures show evidence for a remarkable change in behavior of a supermassive black hole in a distant galaxy.

50th Anniversary of Lunar Orbiter 1 Mission
50th Anniversary of Lunar Orbiter 1 Mission

50th Anniversary of Lunar Orbiter 1 Mission

Portugal’s Madeira Islands and Mainland Fires
Portugal’s Madeira Islands and Mainland Fires

There are several large fires burning on Portugal’s Madeira Island and mainland and NASA-NOAA’s Suomi NPP satellite captured an image…

TESS Artist Concept
TESS Artist Concept

NASA’s Transiting Exoplanet Survey Satellite (TESS), shown here in a conceptual illustration, will identify exoplanets orbiting the brightest stars just…

TESS Flight Lenses Before Modal Testing
TESS Flight Lenses Before Modal Testing

Optics engineer Greg Balonek prepares a TESS flight lens for modal testing at MIT Lincoln Laboratory.

TESS Flight Lenses Before Thermal Chamber Testing
TESS Flight Lenses Before Thermal Chamber Testing

Greg Allen, lead thermal engineer for the TESS instrument at MIT Lincoln Laboratory, works on TESS flight lenses. In this…

TESS Flight Star Trackers
TESS Flight Star Trackers

The TESS flight star tracker, provided by DTU Space for Orbital ATK, will monitor relative locations of stars and tell…