When you observe the upcoming transit of Venus on June 5th or 6th, will you see the black drop?
Comments from NASA's acting administrator hint that the agency may decide to skip building a Moon base and send humans farther out into the solar system instead.
Stars in the process of forming compete with one another for resources as they grow. That's just one of the results that has emerged from new Spitzer Space Telescope infrared images that penetrate dust in the Trifid Nebula (M20), which lies 5,400 light-years away in the constellation Sagittarius. Spitzer uncovered 120 young stars and...
Two teams of astronomers have reported signs of recent collisions between planetesimals orbiting Sunlike stars in circumstellar disks. One team, led by Kate Y. L. Su (University of Arizona), used the Spitzer Space Telescope to image the disk around Vega in the mid-infrared with unprecedented sensitivity. Su and her colleagues found signs that much...
Glowing dimly in infrared light, this double object seems to consist of a brown dwarf and a super-Jupiter.
They look like little whiskers on the Sun's face when seen through a telescope, but the jets of solar gas known as spicules are thousands of kilometers long and shoot material up from the Sun's surface at 20 kilometers per second. They are transient — each one lives just a few minutes before disappearing...
New spacecraft results suggest that Procyon might not experiencing pulsations after all.
Astronomers have a new set of scales for measuring the masses of stars by watching the way a star's gravity bends the light of a distant background star.
Reports around the world vary dramatically as to the reality of a black-drop effect during the Venus transit.
Comet LINEAR is visible to midnorthern observers until late June, after which it becomes a Southern Hemisphere object.
Scientists are looking to the Moon to learn about Earth's climate change.
The Spitzer Space Telescope finds evidence of a planet too young to have formed the expected way.
NASA engineers have decided that driving a Mars rover into a geology-rich crater is worth the risks.
In a first for amateur astronomy, a backyard observer has captured images of the eternally cloud-shrouded surface of Venus.
A new study shows that the longer some asteroids are exposed to space, the redder their surfaces become.
New X-ray observations have independently confirmed that the universe is dominated by dark energy.