At a stargazing event held as part of the 2011 World Science Festival, about 500 people gathered in Brooklyn Bridge Park to look at a handful of stars and the planet Saturn.
Stars are giant, luminous spheres of plasma. Galaxies consist of stars, stellar remnants, dust, gas, and dark matter, bound together by gravity. Learn more about stars and galaxies.
The binary star Porrima is offering a rare chance to resolve its twin stars through a small telescope this month.
A newfound stretch of the Milky Way reveals that our galaxy's distant rim is shaped like the edge of a sombrero.
A new study could confirm that the mysterious forces of dark energy are pulling the universe apart at ever-increasing speeds.
A new image from the Hubble Space Telescope reveals a dwarf galaxy packed with young stars and gas clouds.
The total lunar eclipse of December 21, 2010, is visible from the site of ESO's Very Large Telescope (VLT) at Cerro Paranal in Chile.
During this month of May, four bright planets will engage in a fascinating dance with each other in the morning sky.