In the century since Hubble's pioneering work, astronomers like me have learned that the universe is vast and contains trillions of galaxies. In 1610, astronomer Galileo Galilei used the newly ...

The Andromeda galaxy helped Edwin Hubble settle a great debate in astronomy. Stocktrek Images via Getty Images ...

The journey of astronomical telescopes began in the early 17th century when Galileo Galilei crafted his first refracting ... enabling the discovery of Uranus and the first observations of distant ...

Share on Pinterest “Before my husband Tom and I had a baby, we truly didn’t fight. Then, we had a baby and fought all the time,” said Jancee Dunn, a mom and author who went on to write a ...

Scientists believe that in the very early universe, everything was incredibly tiny, chaotic, and full of random energy ripples, known as quantum foam. It was a state where spacetime was unstable ...

Ring galaxies are some of the rarest galaxies found throughout our universe, and for years scientists have scratched their heads, trying to figure out exactly how these galaxies came to be.

Galaxies like the Milky Way grow by merging with smaller galaxies over billions of years, unlike dwarf galaxies, which have long been thought to lack the heft to attract mass and grow in the same way.

Breast milk and formula can also influence the color of a baby’s stools. Red or white poop can indicate a health problem. Otherwise, a wide range of colors is typical. Anyone who suspects that a ...