NASA - What: Advanced Communication Technology Satellite (ACTS)

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Advanced Communications Technology Satellite (ACTS) in Orbit

Advanced Commun …

On September 12 …

3/4/08

Weddell Sea, Antarctica L, C bands

Weddell Sea, An …

This Spaceborne …

10/5/94

Band of Rubble

Band of Rubble

It's a Rocky World

It's a Rocky Wo …

Forming a Planetary Gap

Forming a Plane …

Distance to Dark Bodies

Distance to Dar …

Veil of Ice

Veil of Ice

Light Curve During Titan Occultation Event

Light Curve Dur …

Entering Saturn's Magnetosphere with a Boom

Entering Saturn …

Artist's impression of a star occultation by Titan

Artist's impres …

Bending the Rings

Bending the Rin …

Cassini Tour Petal Plot

Cassini Tour Pe …

Planet Temperatures

Planet Temperat …

Artist's conception of the deployment of the Advanced

Artist's concep …

Cygnus Loop Supernova Blast Wave

Cygnus Loop Sup …

Hubble Discovers Powerful Laser Beamed from Chaotic Star

Hubble Discover …

World's Most Powerful Telescopes Team Up With a Lens in Nature to Discover Farthest Galaxy in the Universe

World's Most Po …

World's Most Powerful Telescopes Team Up With a Lens in Nature to Discover Farthest Galaxy in the Universe

World's Most Po …

Turtle in Space Describes New Hubble Image

Turtle in Space …

Gravitational Lens Helps Hubble and Keck Discover Galaxy Building Block

Gravitational L …

Astronomers Find One of the Youngest and Brightest Galaxies in the Early Universe

Astronomers Fin …

NASA's Hubble Space Telescope Uses a Distant Gravitational Lens to Explore the Cosmos

NASA's Hubble S …

The second X-43 …

The X-43A hyper …

The X-43A Hypersonic Experimental (Hyper-X) Vehicle hangs suspended in the cavernous Benefield Aenechoic Facility at Edwards Air Force Base during radio frequency tests in January 2000.

X-43A Undergoin …

The X-43A Hypersonic Experimental (Hyper-X) Vehicle hangs suspended in the cavernous Benefield Aenechoic Facility at Edwards Air Force Base during radio frequency tests in January 2000.

X-43A Undergoin …

The X-43A Hypersonic Experimental (Hyper-X) Vehicle hangs suspended in the cavernous Benefield Aenechoic Facility at Edwards Air Force Base during radio frequency tests in January 2000.

X-43A Undergoin …

The X-43A Hypersonic Experimental (Hyper-X) Vehicle hangs suspended in the cavernous Benefield Aenechoic Facility at Edwards Air Force Base during radio frequency tests in January 2000.

X-43A Undergoin …

The first of three X-43A hypersonic research aircraft was mated to its modified Pegasus? booster rocket in late January at NASA's Dryden Flight Research Center, Edwards, Calif.

X-43A hypersoni …

This head-on view shows the first of three X-43A hypersonic research aircraft (foreground) after it was mated to its modified Pegasus? booster rocket (rear) in late January at NASA's Dryden Flight Research Center, Edwards, Calif.

Head-on view sh …

A side-view of an early desk-top model of NASA's X-43A "Hyper-X," or Hypersonic Experimental Vehicle, which has been developed to flight test a dual-mode ramjet/scramjet propulsion system at speeds from Mach 7 up to Mach 10 (7 to 10 times the speed of sound, which varies with temperature and altitude).

Hyper-X Vehicle …

Sleek lines are apparent in this side-view of an early desk-top model of NASA's X-43A "Hyper-X," or Hypersonic Experimental Vehicle, which has been developed to flight test a dual-mode ramjet/scramjet propulsion system at speeds from Mach 7 up to Mach 10 (7 to 10 times the speed of sound, which varies with temperature and altitude).

Hyper-X Vehicle …

This aft-quarter model view of NASA's X-43A "Hyper-X" or Hypersonic Experimental Vehicle shows its sleek, geometric design. The X-43A was developed to flight test a dual-mode ramjet/scramjet propulsion system at speeds from Mach 7 up to Mach 10 (7 to 10 times the speed of sound, which varies with temperature and altitude).

Hyper-X Vehicle …

A front view of an early desk-top model of NASA's X-43A "Hyper-X," or Hypersonic Experimental Vehicle, which has been developed to flight test a dual-mode ramjet/scramjet propulsion system at speeds from Mach 7 up to Mach 10 (7 to 10 times the speed of sound, which varies with temperature and altitude).

Hyper-X Vehicle …

A top front view of an early desk-top model of NASA's X-43A "Hyper-X," or Hypersonic Experimental Vehicle, developed to flight test a dual-mode ramjet/scramjet propulsion system at speeds from Mach 7 up to Mach 10 (7 to 10 times the speed of sound, which varies with temperature and altitude).

Hyper-X Vehicle …

The configuration of the X-43A Hypersonic Experimental Research Vehicle, or Hyper-X, attached to a Pegasus launch vehicle is displayed in this three-foot-long model at NASA's Dryden Flight Research Center, Edwards, California.

Hyper-X and Peg …

The configuration of the X-43A Hypersonic Experimental Research Vehicle, or Hyper-X, attached to a Pegasus launch vehicle is displayed in this side view of a three-foot-long model of the vehicle/booster combination at NASA's Dryden Flight Research Center, Edwards, California.

Hyper-X and Peg …

The configuration of the X-43A Hypersonic Experimental Research Vehicle, or Hyper-X, attached to a Pegasus launch vehicle is displayed in this three-foot-long model at NASA's Dryden Flight Research Center, Edwards, California.

Hyper-X and Peg …

A close-up view of the X-43A Hypersonic Experimental Research Vehicle, or Hyper-X, portion of a three-foot-long model of the vehicle/booster combination at NASA's Dryden Flight Research Center, Edwards, California.

Hyper-X and Peg …

The configuration of the X-43A Hypersonic Experimental Research Vehicle, or Hyper-X, attached to a Pegasus launch vehicle is displayed in this three-foot-long model at NASA's Dryden Flight Research Center, Edwards, California.

Hyper-X and Peg …

A close-up of the X-43A Hypersonic Experimental Vehicle, or "Hyper-X," in its protective shipping framework as it arrives at the Dryden Flight Research Center in October 1999. The X-43A was developed to research a dual-mode ramjet/scramjet propulsion system at speeds from Mach 7 up to Mach 10 (7 to 10 times the speed of sound, which varies with temperature and altitude).

X-43A/Hyper-X V …

Technicians prepare a Pegasus rocket booster for flight tests with the X-43A "Hypersonic Experimental Vehicle," or "Hyper-X." The X-43A, which will be attached to the Pegasus booster and drop launched from NASA's B-52 mothership, was developed to research dual-mode ramjet/scramjet propulsion system at speeds from Mach 7 up to Mach 10 (7 to 10 times the speed of sound, which varies with temperature and altitude).

Pegasus Rocket …

A head-on view of the X-43A Hypersonic Experimental Vehicle, or "Hyper-X," in its protective shipping framework as it arrives at the Dryden Flight Research Center in October 1999. The X-43A was developed to research a dual-mode ramjet/scramjet propulsion system at speeds from Mach 7 up to Mach 10 (7 to 10 times the speed of sound, which varies with temperature and altitude).

X-43A/Hyper-X V …

The X-43A Hypersonic Experimental Vehicle, or "Hyper-X," carefully packed in a protective shipping framework, is unloaded from a container after its arrival at NASA's Dryden Flight Research Center in October 1999. The X-43A was developed to research a dual-mode ramjet/scramjet propulsion system at speeds from Mach 7 up to Mach 10 (7 to 10 times the speed of sound, which varies with temperature and altitude).

X-43A/Hyper-X V …

A close-up view of the front end of a Pegasus rocket booster being prepared by technicians at the Dryden Flight Research Center for flight tests with the X-43A "Hypersonic Experimental Vehicle," or "Hyper-X." The X-43A, which will be attached to the Pegasus booster and drop launched from NASA's B-52 mothership, was developed to research dual-mode ramjet/scramjet propulsion system at speeds from Mach 7 up to Mach 10 (7 to 10 times the speed of sound, which varies with temperature and altitude).

Pegasus Rocket …

The X-43A Hypersonic Experimental Vehicle, or "Hyper-X" is seen here undergoing ground testing at NASA's Dryden Flight Research Center, Edwards, California. The X-43A was developed to research a dual-mode ramjet/scramjet propulsion system at speeds from Mach 7 up to Mach 10 (7 to 10 times the speed of sound, which varies with temperature and altitude).

X-43A Vehicle D …

This photo shows a close-up, rear view of the X-43A Hypersonic Experimental Vehicle, or "Hyper-X" undergoing ground testing at NASA's Dryden Flight Research Center, Edwards, California in December 1999. The X-43A was developed to research a dual-mode ramjet/scramjet propulsion system at speeds from Mach 7 up to Mach 10 (7 to 10 times the speed of sound, which varies with temperature and altitude).

X-43A Vehicle D …

The X-43A Hypersonic Experimental Vehicle, or "Hyper-X" is seen here undergoing ground testing at NASA's Dryden Flight Research Center, Edwards, California in December 1999. The X-43A was developed to research a dual-mode ramjet/scramjet propulsion system at speeds from Mach 7 up to Mach 10 (7 to 10 times the speed of sound, which varies with temperature and altitude).

X-43A Vehicle D …

The X-43A Hypersonic Experimental Vehicle, or "Hyper-X" is seen here undergoing ground testing at NASA's Dryden Flight Research Center, Edwards, California in December 1999. The X-43A was developed to research a dual-mode ramjet/scramjet propulsion system at speeds from Mach 7 up to Mach 10 (7 to 10 times the speed of sound, which varies with temperature and altitude).

X-43A Vehicle D …

An artist?s conception of the X-43A Hypersonic Experimental Vehicle, or "Hyper-X" in flight. The X-43A was developed to flight test a dual-mode ramjet/scramjet propulsion system at speeds from Mach 7 up to Mach 10 (7 to 10 times the speed of sound, which varies with temperature and altitude).

Hyper-X Researc …

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