Keeping NASA's James Webb Space Telescope in the dark

This bunny-suited technician is performing the important task of ensuring no unwanted infrared light interferes with the optical testing of NASA's James Webb Space Telescope inside of Chamber A at NASA's Johnson Space Center ...

Near Earth Objects

Near Earth Objects (NEOs) are small solar system bodies whose orbits sometimes bring them close to the Earth, thereby posing a potential threat. Because NEOs are constantly being replenished from the solar system, they are ...

NASA's next great space telescope

Assembly of the next great space observatory, the James Webb Space Telescope (JWST), is now underway at NASA's Goddard Space Flight Center. Launch target: 2018.

Image: Test mirror segments for the James Webb Space Telescope

The Andromeda galaxy is one of the most distant objects that we can see in the night sky with the naked eye. The light that we see now left there 2.5 million years ago. While this might seem a lot, in practice it is in our ...

SOFIA points telescope toward Pluto occultation

The Stratosphere Observatory for Infrared Astronomy (SOFIA) is a modified Boeing 747SP aircraft that makes celestial observations with its German-built 100-inch telescope. The telescope is enhanced to collect infrared radiation, ...

Image: Simulating space for JWST's four infrared instruments

Building a space telescope is no mean feat. Conditions here on Earth are drastically different from those experienced in orbit around our planet. How do we know that any telescope built in our controlled laboratories can ...

What are the biggest telescopes in the world (and space)?

When you want to watch the sky, size really matters. The more light a telescope can collect, the more information we can get about stars, galaxies, quasars, or whatever the heck else we want to take a look at.

Image: Horsehead nebula viewed in infrared

Sometimes a horse of a different color hardly seems to be a horse at all, as, for example, in this newly released image from NASA's Spitzer Space Telescope. The famous Horsehead nebula makes a ghostly appearance on the far ...

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