Sunspot Grows to 20 Times Size of Earth
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A sunspot group aimed squarely    at Earth has grown to 20 times the size of our planet and has the potential    to unleash a major solar storm.
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Fast forward five billion years Our sun will probably look very much the same for the next few billion years, plodding happily along the main sequence, bathing our solar system in its friendly yellow rays. All very nice for us living on Earth, of course, but not terribly exciting.â¦
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A breakthrough technology is generating hyper growth.
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In a solar system thousands of light years away, a star about half the size of our sun is being orbited by two planets that seem like smaller versions of Jupiter and Saturn, astronomers report.
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A rise in global temperatures could result in devastating effects in just over 20 years time, a study warns.
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Greenhouse gas emissions could cause global temperatures to rise by up to 19.8 degrees Fahrenheit, according to first results from the world's largest climate modeling experiment.
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Honolulu, HawaiiÂ -- The world's largest and most prolific team of planet hunters announced Monday the discovery of 28 new planets outside our solar system, increasing to 236 the total number of known exoplanets.University of California, Berkeley, post-doctoral fellow Jason T.
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Something strange happened on the sun last week: all the sunspots vanished. This is a sign, say forecasters, that solar minimum is coming sooner than expected.
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The Antarctic ozone hole is back to an average size, shrinking about 16 percent from last year's record high, NASA said Friday. But it's still the size of North America.
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According to Kenyon and Bromley&#39;s simulation, such an encounter took place more than 4 billion years ago - 100-200 million years after the Sun&#39;s birth.
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For about eight hours, an &quot;extreme geomagnetic storm&quot; raged in the upper atmosphere, as high-energy particles emitted by the sun three days ago swept over Earth.
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Today, February 24th, is the 20th anniversary of the discovery of Supernova 1987A (SN1987A), the most famous supernova of our time.
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The Sun is in the thick of one of the longest and stormiest periods in 8000 years, say researchers who have tracked down an 11,400-year record of stormy sunspot activity in tree rings.
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Researchers predict the recurring "dead zone" off the Louisiana coast will grow this summer to its largest size in at least 22 years, 8,543 square miles.
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The universe looked a little more familiar and friendlier. The roll call of planets beyond the solar system swelled significantly with the announcement of a trio of newly-discovered worlds much smaller than any previously discovered around other stars.
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Twenty years ago, astronomers witnessed one of the brightest stellar explosions in more than 400 years. The titanic supernova, called SN 1987A, blazed with the power of 100 million suns for several months following its discovery on Feb.
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By Eric Hand  ST. LOUIS - A decade ago, NASA's Galileo probe made a stupendous discovery: A vast, warm, salty ocean - bigger than all of Earth's put together - under the icy crust of Europa, one of Jupiter's four large moons.  Ever since, William McKinnon has been chafing to go back.