Heliosphere

September 7, 2016
yarkovsky_asteroids

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?
May 8, 2016
665324-850x636

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
Ryan Milligan safely gazing at a solar eclipse

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
The graphic shows the shape of the eclipse seen in different locations.

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
Sun Eclipsed by Earth from SDO in the 193 angstrom wavelength.

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
The supermoon of March 19, 2011 (right), compared to a more average moon of December 20, 2010 (left), as viewed from Earth credit: http://en.wikipedia.org/wiki/Supermoon

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
A total lunar eclipse on Dec. 21, 2010. Photo credit: Gary A. Becker

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 […]
November 28, 2013
NASA:ESA SOHO LASCO C2 and C3

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-sq

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
When the Moon passes directly between the Sun and Earth, its umbra (shadow cone) reaches Earth's surface and thus completely covers the Sun. The result is a total solar eclipse. But when the Moon is slightly farther from Earth, its disk appears to small to block the entire Sun, and an annular (or ring) eclipse results. credit: Sky & Telescope

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 […]