Space - page 93

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Newly-discovered asteroid 2011 MD will pass only 12,000 kilometers above Earth's surface

Newly-discovered asteroid 2011 MD will pass only 12,000 kilometers (7,500 miles) above Earth's surface on Monday June 27 at about 1:00 p.m. EDT (1700 UT).

June 27, 2011

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A fast-moving stream of solar wind is buffeting Earth's magnetic field

A fast-moving stream of solar wind is buffeting Earth's magnetic field. The combined effect of this stream plus a CME expected to arrive on June 24th has prompted NOAA forecasters to declare a 30% to 35% chance of geomagnetic storms during the next 24 hours.

June 24, 2011

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Small asteroid to whip past Earth on June 27

Newly-discovered asteroid 2011 MD will pass only 12,000 kilometers (7,500 miles) above Earth's surface on Monday June 27 at about 9:30 a.m. EDT. NASA analysts say there is no chance the space rock will strike Earth. Nevertheless, the encounter is so close that Earth's

June 24, 2011

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Geomagnetic storm warning!

A fast-moving stream of solar wind is buffeting Earth's magnetic field. The combined effect of this stream plus a CME expected to arrive soon has prompted NOAA forecasters to declare a 30% to 35% chance of geomagnetic storms on June 23-24. High-latitude sky watchers

June 23, 2011

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Impact of solstice solar flare is expected on June 24th

A CME propelled toward Earth by the "solstice solar flare" of June 21st may be moving slower than originally thought. Analysts at the GSFC Space Weather Lab have downgraded the cloud's probable speed from 800 km/s to 650 km/s. Impact is now expected on June 24th at

June 22, 2011

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Incoming solar flare, expecting geomagnetic storm

Magnetic fields above sunspot complex 1236 erupted during the early hours of June 21st, producing a C7-class solar flare and a full-halo CME. The expanding cloud appears to be heading almost directly toward

June 21, 2011

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Star wandered too close to the black hole and got sucked in by the huge gravitational forces

Astronomers have spied a star's swan song as it is shredded by a black hole. Researchers suspect that the star wandered too close to the black hole and got sucked in by the huge gravitational forces. The star's final moments sent a flash of radiation hurtling towards

June 20, 2011

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Solar wind hit Earth's magnetic field

A sharp gust of today, June 17th, at approximately 0230 UT. This probably signaled the arrival of a CME, en route from the sun since June 14th.

June 17, 2011

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Sunspot 1236 harbors energy for M-class solar flares

The magnetic field of sunspot 1236 harbors energy for M-class solar flares. NOAA forecasters estimate a 25% chance of such an eruption during the next 24 hrs.

June 16, 2011

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New insights on how solar minimums affect Earth

Since 1611, humans have recorded the comings and goings of black spots on the sun. The number of these sunspots waxes and wanes over approximately an 11-year cycle - more sunspots generally mean more activity and eruptions on the sun and vice versa. The number of

June 15, 2011

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M1.3 solar flare ejected, CME arrives on June17th

On June 14th around 08:10 UTC, a magnetic filament near the sun's eastern limb became unstable and erupted. The resulting blast hurled a bright and massive CME into space: The expanding cloud was observed by 3 spacecraft: STEREO-A, STEREO-B and SOHO....

June 15, 2011

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Total lunar eclipse on June 15th!

We're in the midst of an interesting eclipse trifecta. Partial solar eclipses occur during the New Moons on June 1st and July 1st, which are sandwiched around a total lunar eclipse during the Full Moon on June 15th. Those of you in Europe and elsewhere in the

June 13, 2011

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M2.5 solar flare, CME expected on June 9 and 10

On June 7th at 0641 UT, magnetic fields above sunspot complex 1226-1227 became unstable and erupted. The resulting blast produced an M2-class solar flare, an S1-class radiation storm, and an unbelievable movie:Much of the plasma thrown up by the blast simply fell

June 08, 2011

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Geomagnetic storm in progress, gigantic solar prominences

Amateur astronomers around the world are reporting strong activity on the limb of the sun. The prominences on June 4th were gigantic. Prominences are clouds of hot plasma

June 05, 2011

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A sharp gust of solar wind hit Earth's magnetic field

A sharp gust of solar wind hit Earth's magnetic field at approximately 20:30 UTC on June 4, 2011. High-latitude sky watchers in both hemispheres should be alert for auroras. Solar windspeed: 495.9 km/secdensity: 2.6 protons/cm3 Planetary K-indexNow: Kp= 5...

June 04, 2011

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Co-orbital asteroid 2009BD flyby

Small asteroid 2009 BD is flying through the Earth-moon system today about 215,000 miles from Earth. The 10m wide space rock poses no threat to our planet, but it is of acute scientific interest."It's notable because it remains close to Earth for months at a time and

June 02, 2011

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Water content of lunar magma is 100 times higher than previous studies suggested

A team of NASA-funded researchers has measured for the first time water from the moon in the form of tiny globules of molten rock, which have turned to glass-like material trapped within crystals. Data from these newly-discovered lunar melt inclusions indicate the

May 28, 2011