NASA’s new space telescope opened its huge, gold-plated, flower-shaped mirror Saturday, the final step in the observatory's dramatic unfurling. The last portion of the 21-foot (6.5-meter) mirror swung ...

Shaped like a megaphone, the upcoming mission will map the entire sky in infrared light to answer big questions about the ...

Scientists used the powerful James Webb Space Telescope to spot six of these rogue objects, which move through the cosmos untethered from any solar system. They're a little bigger than the gas giant ...

The venerable Hubble Space Telescope is running out of gyroscopes, and when none are left, the instrument will cease to conduct meaningful science. To preserve the telescope, which has been operating ...

CAPE CANAVERAL, Fla. — Telescopes around the world have spotted a monster radio jet streaming from a quasar dating back to the first 1 billion years of the universe. At double the width of our Milky ...

The article discusses three main telescope types: refractors (best for bright objects, portable), reflectors (best for faint objects, larger apertures), and catadioptrics (compromise between aperture ...

An aperture mask is a device designed to increase a telescope's effective focal ratio and significantly reduce its light throughput. This modification can alter a telescope's optical characteristics; ...

Refractor to reflector, Schmidt-Cassegrain to Maksutov-Cassegrain - this is everything you need to know about the different types of telescopes. When you purchase through links on our site, we may ...