What is a Supermoon?
A supermoon is when a full Moon or new Moon coincides with the Moon's closest approach to the Earth. more
Articles about Eclipses (26)
What Is a Total Lunar Eclipse?
A Total Lunar Eclipse happens when the Earth's shadow blocks the direct light from the Sun reaching the Moon's surface. more
Total Solar Eclipses
Everything you need to know about total eclipses of the Sun. more
Solar and Lunar Eclipses
Solar and lunar eclipses, why they occur, when the next eclipse is, and from where you can see them. more
Solar Eclipses in History
Solar eclipses were historically viewed as omens that bring about death and destruction and people in many ancient civilizations tried their best to understand and predict them. more
Annular Solar Eclipse
An annular solar eclipse occurs when the Moon moves in front of the Sun but does not cover it completely. more
Partial Solar Eclipse
More common than a total solar eclipse, a partial solar eclipse happens when the Moon only partially covers the Sun. more
Never Look Directly at the Sun
Protect your eyes during a transit or solar eclipse. more
What is a Penumbral Lunar Eclipse?
A penumbral lunar eclipse occurs when the outer shadow of the Earth falls on the Moon's face. It is easy to miss this type of lunar eclipse. more
What Is a Partial Lunar Eclipse?
A partial lunar eclipse happens when the Earth moves between the Sun and the Moon, but they are not precisely aligned. more
Make a Pinhole Projector
DIY: Make a simple pinhole projector using two pieces of card or paper to safely watch a projection of a solar eclipse. more
June 5-6, 2012: Transit of Venus
The 2012 Venus transit was the last chance to see this phenomenon for over 100 years. Mercury transits happen more often, the next one in May, 2016. more
Astronomical Terms
What do astronomers really mean when they use those technical terms? more
10 Facts: Total Solar Eclipse
The March 20, 2015 Total Solar Eclipse will be a grand and rare sight. Here are 10 facts not to be missed. more
Make a Solar Eclipse Projector
Make a Sun projector a pair of binoculars or a telescope to safely watch solar eclipses or a Mercury transit. more
What's a Blood Moon?
Blood Moon is sometimes used to describe 4 total lunar eclipses in a row. When the Earth casts its shadow on a full Moon and eclipses it, the Moon may get a red glow. more
Make a Box Pinhole Projector
Instructions on how to DIY a pinhole projector using a cardboard box and household items to safely see a solar eclipse. more
11 Facts: Total Lunar Eclipse
The Sept 27/ 28, 2015 Total Lunar Eclipse is the final eclipse in a series of 4 total eclipses of the Moon called eclipses of the Blood Moon. more
Facts about Partial Solar Eclipse
The Sep 13, 2015 Partial Solar Eclipse will be visible from south of Africa and Antarctica. Here are 6 reasons why it is noteworthy. more
Eclipse Magnitude
Eclipse magnitude is a number that astronomers associate with solar or lunar eclipses. What does it mean? more
Mercury Transit
Local time for Mercury transit May 9 / May 10, 2016. Visible from most of the world. Will you be able to see it? Map of path and animation. more
What's a Solar Eclipse?
Solar eclipses happen when the Moon moves between Sun and Earth, blocking the Sun's rays and casting a shadow on Earth. more
Solar Eclipse Myths
The solar eclipse has inspired many mythical stories and influenced human behavior. Even today, eclipses of the Sun are considered bad omens in many cultures. more
How to Watch Lunar Eclipses?
A lunar eclipse can be seen with the naked eye, unlike solar eclipses, which have special safety requirements. more
Lunar Eclipse: Red Moon
Find out why a totally eclipsed Moon turns a shade of red. more
2016 Cosmic Calendar
Sky watchers have wonderful sights to come in 2016. more
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