Space discoveries

Artist's illustration of NASA's planet-hunting Kepler observatory in space.

Credit: NASA

Kepler Results Update: NASA's Kepler Space Telescope has confirmed the discovery of 1, 284 new alien planets, 9 of which may be habitable for life as we know it. About 100 of the planets are similar in size to our own Earth. Read the full story here:

NASA officials will announce the planet-hunting Kepler space telescope's latest discoveries at a news conference today (May 10).

It's unclear what, exactly, Kepler has found; a media advisory about the news conference didn't give any specific clues. You can find out by listening to the 1 p.m. EDT (1700 GMT) briefing live here at Space.com, courtesy of NASA.

The participants in the Kepler news conference are:

• Paul Hertz, Astrophysics Division director at NASA headquarters in Washington, D.C.;
• Timothy Morton, associate research scholar at Princeton University in New Jersey;
• Natalie Batalha, Kepler mission scientist at NASA's Ames Research Center in Moffett Field, California; and
• Charlie Sobeck, Kepler/K2 mission manager at Ames.

The 0 million Kepler mission launched in March 2009, tasked with determining how common Earth-like planets are throughout the Milky Way galaxy. To date, the observatory has discovered more than 1, 000 alien planets, along with another 3, 600 planet "candidates, " the vast majority of which will eventually be confirmed, according to mission officials.

Kepler finds alien worlds by noticing the tiny brightness dips they cause when they cross the faces of their host stars from the telescope's perspective. This "transit" technique requires incredibly precise pointing abilities, which Kepler lost when the second of its four orientation-maintaining reaction wheels failed in May 2013.

Astronomers have confirmed more than 800 planets beyond our own solar system, and the discoveries keep rolling in. How much do you know about these exotic worlds?

0 of 10 questions complete

Alien Planet Quiz: Are You an Exoplanet Expert?

Astronomers have confirmed more than 800 planets beyond our own solar system, and the discoveries keep rolling in. How much do you know about these exotic worlds?

0 of questions complete

That failure ended the mission's original planet hunt. However, the Kepler team soon found a way to stabilize the spacecraft using sunlight pressure and the two remaining reaction wheels, and in 2014, Kepler embarked on a new mission called K2.

The observatory has continued hunting for exoplanets during K2, though on a more limited scale. Kepler is also studying supernovas, asteroids and a number of other cosmic objects and phenomena in the new mission, which is broken up into a series of 90-day "campaigns."

See also:

• Akumulatorsko orodje