Solar watch - page 3

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Annular solar eclipse on May 9/10, 2013

An annular solar eclipse will take place on May 9/10, 2013, with a magnitude of 0.9544. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partially obscuring the image of the Sun for a

May 06, 2013

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Solar watch – Huge prominence eruption May 1, 2013

A spectacular prominence eruption was observed on the Sun on May 1, 2013 at 02:30 UTC. The event was classified as a farside eruption from active region located beyond eastern limb. This was the largest such event in quite some time now. Powerful blast was unleashed

May 01, 2013

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Solar Dynamics Observatory: Three Years of Sun in Three Minutes

In the three years since it first provided images of the sun in the spring of 2010, NASA's Solar Dynamics Observatory (SDO) has had virtually unbroken coverage of the sun's rise toward solar maximum, the peak of solar activity in its regular 11-year cycle. This video

April 22, 2013

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SDO's Earth eclipse and the lunar transit (March 11, 2013)

On March 2, 2013, NASA's Solar Dynamics Observatory (SDO) entered its semiannual eclipse season, a period of three weeks when Earth blocks its view of the Sun for a period of time each day. On March 11, 2013 SDO experienced two different eclipses - The Earth and the

March 12, 2013

Artistic Solar Wind

Researchers discovered source of solar wind energy

Researchers have found signs of an energy source in the solar wind, a hot and fast flow of magnetized gas that streams away from the sun's upper atmosphere. Solar wind is made of hydrogen and helium ions with a sprinkling of heavier elements. Solar wind is

March 10, 2013

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SDO's 2013 solar spring eclipse season has begun

NASA's Solar Dynamics Observatory (SDO) has eclipse seasons twice a year near each equinox. Earth passes directly between the Sun and produces a series of eclipses from the point of view of the spacecraft.The first eclipse of the SDO Spring 2013 Eclipse Season

March 03, 2013

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Unexpectedly low solar activity - Double peaked Solar Maximum suggested

2013 was supposed to be the year of Solar Max, the peak of the 11-year sunspot cycle yet now that it has arrived solar activity is relatively low. Sunspot numbers are well below their values in 2011, and strong solar flares have been infrequent for many months. There

March 02, 2013

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First sightings of how a Coronal Mass Ejection (CME) forms

On July 18, 2012, a fairly small explosion of light burst off the lower right limb of the sun. Such flares often come with an associated eruption of solar material, known as a coronal mass ejection or CME - but this one did not.Something interesting did happen,

February 02, 2013

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Geomagnetic storm / Solar Watch - January 18, 2013

Two Coronal Mass Ejections (CME's) are expected to impact the earth in the next 24 hours and a G1-Class Geomagnetic storm will be possible shortly after. Solar activity is expected to go quiet again after these active regions rotate off the earth-facing disk over the

January 18, 2013

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Sunspot 1654 still dominates the visible solar disk

Active Region 1654 has traveled half across the Earth facing side of the Sun and now is squarely facing Earth. On January 13, this huge sunspot reached its maximum size measured as more than 193 000 km (120, 000 miles) wide long or 15 Earth diameters) from end to

January 16, 2013

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Kanzelhohe Solar Observatory in Austria captures airplane afront of the Sun

Kanzelhohe Solar Observatory in Austria recorded an interesting image of the Sun on January 12, 2013 at 07:57 UTC. Using Kanzelhoehe H-alpa filters to spot the active regions of the Sun, they captured a plane and contrail flying afront of the Sun as seen from the

January 13, 2013

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Solar prominence eruption on January 10, 2013

NASA's SDO recorded a beautiful solar prominence eruption  just beyond the eastern limb on January 10,

January 12, 2013

catching sunlight

Catching Sunlight: Alan Friedman at TEDxBuffalo

Amateur astro-photographer Alan Friedman captures the sun and other stars with humble equipment, in an unlikely place, in a highly developed field. He discusses why he does it, and why it's important for everyone to be a bit of a DIY upstart. In the spirit of ideas

January 11, 2013

Progressing toward solar max

The effects of solar variability on Earth's climate

A new report issued by the National Research Council (NRC), "The Effects of Solar Variability on Earth's Climate," lays out some of the surprisingly complex ways that solar activity can make itself felt on our planet.The luminosity of our own sun varies a 0.1% over

January 10, 2013

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NASA | Why are we seeing so many sungrazing comets?

Before 1979, there were less than a dozen known sungrazing comets. As of December 2012, we know of 2,500. Why did this number increase? With solar observatories like SOHO, STEREO, and SDO, we have not only better means of viewing the sun, but also the comets that

December 30, 2012

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Planet Earth now visible in STEREO Behind's Inner Heliospheric Imager

STEREO spacecrafts are moving closer to the points in their orbits at which they will be directly opposite Earth on the other side of the Sun. Earth has been visible in the HI2 telescopes since launch, but this is the first time it's been visible in either of the HI1

December 22, 2012

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Ups and downs in the daily minimum solar irradiance

With quite regular intervals of about 27 days which Sun takes to make full rotation circle, the Sun alternates between an active hemisphere with relatively many sunspots , and a hemispheric "face" that is pretty much void of these dark blemishes. For as long as it

December 03, 2012