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What the Next 50 Years Hold for Human Spaceflight

Fifty years ago today (April 12), cosmonaut Yuri Gagarin blasted into Earth orbit, marking the beginning of the human spaceflight era. Full story

Space Race II: Tourism is the new frontier

Fifty years after the Soviet Union beat the United States to send the first human to space, a new space race is heating up. Full story

Using Fusion to Propel an Interstellar Probe

Project Icarus is an ambitious five-year study into launching an unmanned spacecraft to an interstellar destination. Headed by the Tau Zero Foundation and British Interplanetary Society, a non-profit group of scientists dedicated to interstellar spaceflight, Icarus is working to develop a spacecraft Full story

Venus Has a Moon?

Astronomers have been busy trying to determine the spin period and composition of Venus' moon. On Dec. 8, 2010, results of the study were announced by JPL/Caltech scientists, led by Michael Hicks. Full story

Rocket blasts off with solar sail and more

A rocket carrying seven different satellites, including one that will attempt to deploy a small solar sail into orbit, successfully blasted off from an island in Alaska on Friday. Full story

First person: How I trained to fly in space

Reporter has wild ride in preparation for private space tourist flight, culminating in a centrifuge ride that packed on a walloping six times the normal force of gravity. Full story

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Related Photos

Sally Ride
Sally Ride

June 1983: Astronaut Sally Kirsten Ride, the first American woman in space inspects the array of tools at her disposal during her earth orbit in the Challenger shuttle STS-7. The circular object is a Monodisperse Latex Reactor .

Woman In Space
Woman In Space

June 1983: Astronaut Sally Kirsten Ride, the first American woman in space takes a photograph during her earth orbit in the Challenger shuttle STS-7.

ImageL Astronaut Sally Kirsten Ride
ImageL Astronaut Sally Kirsten Ride

Astronaut Sally Kirsten Ride inspects the array of tools at her disposal during her earth orbit in the Challenger shuttle STS-7 on June 1983.

Phobos-Grunt
Phobos-Grunt

An artist's conception shows the Phobos-Grunt probe orbiting Mars. The spacecraft, which was designed to land on the Martian moon Phobos, has been stuck in Earth orbit since its launch on Nov. 9.