A do-it-yourself Galilean telescope makes an excellent and inexpensive starter telescope — or science fair project. When you purchase through links on our site, we may earn an affiliate commission.

Even if you have only a small degree of keratoconus, don’t get LASIK surgery. Regular astigmatism is a common eye problem that can be corrected with glasses or contact lenses. When you have ...

That analysis estimated the Hubble Constant at 67. But Riess and his colleagues used the Hubble Space Telescope to study exploding stars (supernovae) in distant galaxies and came up with the ...

The Arecibo Observatory's giant radio telescope in Puerto Rico suffered a cataclysmic failure in December 2020. Credit: Walter Bibikow / DigitalVision / Getty Images Powerful electromagnetic ...

The dramatic 2020 collapse of the famous Arecibo Telescope was 39 months in the making, according to a new federal report. The just-released National Academy of Sciences, Engineering, and Medicine ...

From its halo-like orbit nearly a million miles from Earth, the James Webb Space Telescope is seeing farther than human eyes have ever seen. In May, astronomers announced that Webb detected the ...

For thousands of years, gazing upward was how astronomers studied the sky above. On a clear night, several planets in our solar system were visible without a telescope. However, as telescopes ...

A celestial light show illuminates a distant spiral galaxy, where a hidden supernova briefly outshines its stellar neighbors in a new image from the Hubble Space Telescope. The galaxy, called NGC ...

WASHINGTON, Nov 5 (Reuters) - At the heart of our Milky Way galaxy lurks a supermassive black hole about four million times the mass of the sun, called Sagittarius A*. In fact, these objects ...

Astronomers using the James Webb Space Telescope have spotted a feeding black hole in the early universe that seems to be eating 40 times faster than is theoretically possible. Using JWST to get a ...

Despite the lack of a dedicated mission to the planet, scientists have learned plenty through ground observations and space telescopes A photo of Neptune, taken by the Voyager 2 probe, with the ...

As amazing as the James Webb Space Telescope is, its primary mirror is only 6.5 meters in diameter. Even then, the mirror had to have foldable components to fit into the launch rocket. In contrast ...