Evidence suggests ancient civilizations, including the Greeks, may have had early optical knowledge and devices like ...

An event called a "ring plane crossing" will occur between Saturn and Earth on March 23, 2025, when Saturn's rings will ...

The planet 51 Pegasi b is a long way from Prior Lake, 48 light years (several billion miles) to be exact. It orbits a fifth magnitude star, similar to our Sun, in the constellation Pegasus. It was ...

Skywatchers on Thursday evening, Feb. 6, will notice an eye-catching pairing-off between two of the brightest objects in the ...

While this planetary alignment isn't particularly rare, it is relatively uncommon. Spotting two, three, or even four bright ...

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the ...

The journey of astronomical telescopes began in the early 17th century when Galileo Galilei crafted his first refracting telescope in 1609. Although not the inventor of the telescope, Galileo was the ...

On January 7, 1610, Italian astronomer Galileo Galilei used his newly improved homemade telescope, which magnified objects 20 times, to observe the planet Jupiter. Nearby, he noticed three points of ...

TEMPLE, Texas — Italian astronomer Galileo Galilei advanced the field ... Looking through his 20-power homemade telescope, Galilei saw three points of light near Jupiter. He saw another point ...

Galileo changed the way we study motion. He backed experimentation as a means of uncovering the secrets of nature. And his discoveries with the telescope changed our understanding of the universe.

Saturn has been playing second fiddle to Mars all year, but in June the red planet fades while the ringed planet reaches its pinnacle. Saturn’s rings are now very favorably tilted for ...