The journey of astronomical telescopes began in the early 17th century when Galileo Galilei crafted his first refracting ...

Strange x-ray pulses hint at a surprisingly long-lived white dwarf orbiting precariously close to a supermassive black hole ...

His theory of optics made him reconsider the design of the telescope, which up until this point was a large, cumbersome instrument. By using mirrors instead of lenses, Newton was able to create a ...

Scientists have detected emanating from the nucleus of a galaxy relatively close to our Milky Way flashes of X-rays gradually ...

This discovery contradicts current theories and laws of science. It involves a cosmic object that emits radio waves every 22 ...

This contradicts current theories and laws of science. It comes from a cosmic object that emits radio waves every 22 minutes.

There are no stars in the sky for the same reason you don't see stars during the day on Earth, according to NASA: The bright ...

Looking for a telescope for the moon ... The phenomenon was explained satisfactorily by Isaac Newton, attributing it to the gravitational attraction exerted by the moon and the sun.

How many planets are there? As with the discovery of Uranus, the answer depends on who you ask. Detail from Joseph Wright of ...

The first black hole that astronomers observed "turning off" just turned back on, releasing jets of hot gas into the cosmos.

MIT astronomers have been captivated by the strange behaviors of a supermassive black located 270 million light-years away, ...