樱桃视频

October 21, 2015

Watch a 45-mile-wide asteroid blot out a star tonight

An asteroid the size of Rhode Island will briefly blot out one of the brightest stars in the sky overnight tonight (March 19-20), and you can watch the rare celestial event live online, weather permitting.

October 21, 2015

Watch the Moon, Mars and star form a celestial triangle Wednesday night

If your weather is clear late Wednesday, take a look at the sky toward the east-southeast horizon to spot a "celestrial triangle" formed by the moon, a bright star and an even brighter planet: Mars.

October 21, 2015

Faint smudges may indicate Comet ISON survived sun encounter

A comet that gained an earthly following because of its bright tail visible from space was initially declared dead after essentially grazing the sun. Now, there is a silver of hope that Comet ISON may have survived.

October 21, 2015

Scientists study violent winds of Uranus, Neptune

Screaming winds of infernal violence alternate with periods of dead calm as one nears the surface of Uranus, according to a new analysis of the gas giant.

October 21, 2015

Most powerful star explosion ever seen

Two NASA space telescopes have captured what appears to be the most powerful star explosion ever detected, a cosmic event so luminous that scientists dubbed it "eye-wateringly bright" despite being 3.6 billion light-years from Earth.

October 21, 2015

Voyager 1 escapes sun, enters new region of space

After cruising the 鈥渕agnetic highway鈥� that rings the very outskirts of the solar system, NASA's Voyager 1 spacecraft has entered a new and unexplored region of space, although it had yet to exit the solar system, NASA indicated.聽

October 21, 2015

2013 comet may be brightest ever seen

Excitement continues to rise among both professional and amateur astronomers about Comet ISON, which on Nov.

October 21, 2015

Speed of universe's expansion measured better than ever

The universe just got a new speeding ticket.The most precise measurement ever made of the speed of the universe's expansion is in, thanks to NASA's Spitzer Space Telescope, and it's a doozy.

October 21, 2015

Total lunar eclipse offers weekend treat for American West, Australia, Asia

The heavens are providing a holiday treat this weekend, but you'll have to be quick to catch it.

October 21, 2015

Scientists abandon highly publicized claim about cosmic discovery; new results cast doubt

Scientists who made headlines last March by announcing that they'd found long-sought evidence about the early universe are now abandoning that claim.