June 19, 2020

Fun with the Sun June 20 -21: The Solstice and an Annular Solar Eclipse

The weekend of June 20 – 21, 2020 has a lot going on when it comes to the Sun. We get to enjoy two exciting events thanks to the orbital dance between Earth and the Moon as the move together
June 30, 2019

Eclipse in Chile & Argentina – July 2, 2019

Don't miss the Total Solar Eclipse! Watch online to experience the excitement from 3-6pm EDT.
February 7, 2019

How Does Sunlight Push Asteroids?

Near-Earth asteroids like Bennu pose a potential danger to our planet, so it's important to predict their orbits with great accuracy. Unfortunately, a phenomenon called the Yarkovsky effect can make these predictions difficult over long time periods. How does this effect work?
August 30, 2017
This image is a composite photograph that shows the progression of the total solar eclipse over Madras, Oregon.

2017 Eclipse Image Collection

These images of the total solar eclipse are amazing! The eclipse swept across a narrow portion of the contiguous United States from Lincoln Beach, Oregon to Charleston, South Carolina.
August 22, 2017
Image of the Moon transiting across the Sun, using a blend of 171 ångstrom extreme ultraviolet light and visible light imagery from SDO from August 21, 2017. Credit: NASA/SDO

SDO’s View of the August 21 Solar Eclipse

A movie of the Aug 21, 2017 lunar transit as viewed by the Solar Dynamics Observatory (SDO.)  Credit: NASA/SDO The Sun appears in visible light, and 171 ångstrom extreme ultraviolet light. The movie shows the Sun moving a bit because
August 21, 2017
Credits: M. Druckmüller

Eclipse Across America – August 21, 2017

For the first time since 1979, the contiguous United States will be treated to a total solar eclipse. Even more exciting, the path of totality across the USA starts in Oregon and ends in South Carolina.
June 20, 2017

Happy June Solstice 2017! Oh and the Eclipse!

Happy June Solstice 2017! The beginning of summer for the northern hemisphere and winter for the southern hemisphere. Oh, and it is two months until the August 21, 2017 total solar eclipse! The June Solstice comes on June 21, 2017
February 24, 2017

‘The 2017 Ring of Fire’ – Annular Solar Eclipse

A ‘Ring of Fire’ for parts of South America and Africa An annular solar eclipse will grace parts of South America and Southern Africa starting on the morning of Sunday, February 26, 2017. The event begins at 12:10 UTC as
June 20, 2016

A Rare Full Moon June Solstice for 2016!

For 2016, we get the special treat of a full moon on the June Solstice. This last happened in 1967 and will not happen again until 2062. The June solstice for 2016 begins on June 20th at 22:34 UT (6:34 pm EDT.)
May 8, 2016

Transit of Mercury – May 9, 2016

The planet Mercury will move in front of the sun, May 9, 2016, starting around 7:15 a.m. EDT and ending around 2:45 p.m. EDT. It can be seen from the ground with special solar viewing equipment however, the best way to
March 7, 2016
Southeast Asia Total Solar Eclipse 2016

Southeast Asia Total Solar Eclipse 2016

The moon will pass in front of the sun, casting its shadow over much of Southeast Asia on March 8, 2016 EST (March 9 local time). Get details & watch live!
April 3, 2015
Total Lunar Eclipse of April 15, 2014 from http://www.mreclipse.com/LEphoto/TLE2014Apr/TLE2014Apr-1145.html

Shortest Total Lunar Eclipse of the Century – April 4, 2015

Don’t blink or you’ll miss the shortest lunar eclipse of the century! What is happening? During the early morning hours of April 4, the full moon will pass through Earth’s dark or inner shadow (umbra) creating a total lunar eclipse. Portions
March 19, 2015

March 20, 2015 Supermoon Solar Eclipse

On March 20, 2015 a supermoon total solar eclipse occurs in the Faroe Islands and Svalbard (Norway), and a partial solar eclipse in Europe, northern and eastern Asia and northern and western Africa. The eclipse starts at 07:41 UT and ends
October 20, 2014

October 23, 2014 Partial Solar Eclipse

On Oct. 23, 2014 a partial solar eclipse will be visible to most of North America in the late afternoon. This is the last eclipse of 2014. Never look at the sun or an eclipse directly!  Eye safety during solar eclipses
August 29, 2014

Earth is Eclipsing the Sun When Seen from Space

The Fall 2014 Eclipse SDO Eclipse Season starts today. Around 7:30 UT (2:30 EDT) each day for the next 3 weeks (until Sept. 21), Earth will pass between the Solar Dynamics Observatory (SDO) and the sun. The first eclipse is only
August 10, 2014

Super Supermoon Sunday!

Today’s full moon is the year’s closest supermoon. Today’s full moon is the year’s closest supermoon. A supermoon is when a full moon or a new moon is coincident with the closest approach (called perigee) of the Moon to Earth.
April 14, 2014

Total Eclipse of the Moon – April 14-15, 2014

What is happening? During the nighttime hours of April 14 or 15 (depending on your time zone), the full moon will pass through Earth’s dark or inner shadow (umbra) creating a total lunar eclipse for most of North and South
February 28, 2014

SDO Spring Eclipse Season 2014

It’s that time of year. SDO spring eclipse season started February 27, 2014. During the 3 week season, Earth will pass between SDO and the Sun around 07:30 UT each day. Initially the eclipses are a few minutes long. Their
February 19, 2014

Geomagnetic Storm and Aurora from Valentine’s Weekend CME

A CME from February 16, 2014 has impacted Earth. The CME’s magnetic structure was such that it stirred things up in the magnetosphere.   A significant interplanetary shock detected by ACE at L1 at 3:10 UT, February 19, 2014.   The
January 29, 2014

A Long Lunar Transit for SDO – Jan. 30, 2014

UPDATES 16:17 UT (11:17 UT) – The transit ends with a bang! – an M6.6 flare peaked at 16:11 from AR11967. These images are from just before the flare peak at around 16:00 UT (11:00 EST) again in all 9 SDO/AIA wavelengths.
November 28, 2013

Comet ISON Q&A

What are your questions? Post them in the comments & I’ll work on getting them getting answered ASAP.
November 17, 2013

Comet ISON: Coming to a Sun Near You

Current Status of Comet ISON Updated Nov. 27, 2013 – 10:40 am EST or 15:40 UT Size 1.3 mi in diameter or 2 in diameter km Date and Time of Perihelion  28 November 2013, 18:38 UT (1:38 EST) Distance from
November 2, 2013

A Rare Treat from the Sun, Earth and Moon – A Hybrid Eclipse

There will be a hybrid solar eclipse on Sunday November 3, 2013. This rare occurrence of an annular and total eclipse is the final eclipse event of 2013. Never look at the sun or an eclipse directly!  Eye safety during solar
August 19, 2013

SOHO/LASCO C3 Sees a Very Bright Kreutz-group Sungrazing Comet

“One of the brightest Sungrazers we’ve seen in a long time …”, tweeted Karl Battams (@SungrazerComets) of NRL’s Sungrazing Comets Project. Battams estimates the comet to be approximately 30-50 kilometers wide and expects it to reach speeds of at least 500
May 8, 2013

‘Ring of Fire 2013’ – Annular Solar Eclipse

The first solar eclipse of 2013 is Australia’s 2nd in 6 months Queensland Australia gets another celestial treat after enjoying a total solar eclipse in November 2012. On Friday morning, May 10 (local time Australia), the Moon will travel in
February 28, 2013

Van Allen Probes Discover a 3rd Radiation Belt around Earth

Learn about this new result in a video by NASA Goddard Heliophysics Division. NASA presented these results at a press conference today. Tomorrow I will be on a Google Hangout with several of my colleagues at NASA Goddard. http://bit.ly/YzL5Mz Ask
November 12, 2012

Total Solar Eclipse in the South Pacific – November 13/14, 2012

  A total eclipse of the Sun will be visible on November 13/14, 2012 in a narrow path across the southern hemisphere. The Moon’s umbral shadow starts in northern Australia following a path across the South Pacific Ocean without crossing
June 30, 2012

Venus Transit Part 2 – A Rare Treat on Earth

Venus transits in front of the sun are rare spectacles when viewed from Earth. It won’t happen again in our lifetime! It is the rarest predictable astronomical event, occurs 4 times every 234 years!
May 20, 2012
“Ring of Fire” Solar Eclipse

05.20.12 – “Ring of Fire” Solar Eclipse

During the annular eclipse the Moon will travel in front of the Sun blocking most of its light—except for what looks like a 'Ring of Fire' around the Moon's edge.
March 14, 2012

Comet SWAN Heading for the Sun!

Sungrazing comet seen for the first time with the SOHO/SWAN instrument. It is aptly named Comet SWAN. Ukrainian Amateur astronomer, citizen scientist, and SOHO Comet Hunter Vladimir Bezugly reported a bright blob on images taken by the SWAN instrument on
December 15, 2011

Lovejoy’s Last Day – Unprecedented Multi-spacecraft Observations of a Comet’s Demise (Surprise filled update 12/16/2011)

UPDATE: Lovejoy survived despite most predictions to the contrary! Check out the videos below. A sungrazing comet called Lovejoy is near what will surely be its end. Sungrazers melted by the Sun is not really new. In fact, SOHO has become
July 25, 2011

Transit Part 1 – Is it a UFO or just Venus?

If you have looked at data from the SOHO LASCO C3 coronagraph over the last week or so you may have noticed the very bright object in the field-of-view. You might even think it looks like a UFO. You are not alone.
December 30, 2010
On December 26, SOHO discovered its 2000th comet.

SOHO’S 2000th Comet Spotted By Student

On December 26, SOHO discovered its 2,000th comet. Drawing on help from citizen scientists around the world, SOHO has become the single greatest comet finder of all time. This is all the more impressive since SOHO was not specifically designed to find
November 8, 2010

Another Lunar Transit of the Sun Seen by SDO

As expected SDO experienced another lunar transit on November 6, 2010. This time the moon crossed the southern hemisphere moving from the south pole towards the northeast (left side) edge of the sun. The transit took about 30 minutes and