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
A supermoon is when a full Moon or new Moon coincides with the Moon's closest approach to the Earth. more
The Sun shines directly at the equator on the September equinox and the length of day and night is nearly equal, but not quite. more
The 2015 Perseid meteor shower will peak around August 11. A new moon on August 14, 2015 will create perfect conditions for watching the meteor shower. more
The December solstice is also known as the summer solstice in the Southern Hemisphere and the winter solstice in the Northern Hemisphere. more
The fall (autumnal) equinox in the Northern Hemisphere is in September. In the Southern Hemisphere it's in March. more
'Once in a blue moon', suggests something is very rare. But just how rare is a Blue Moon? more
The June solstice is the longest day of the year in the Northern Hemisphere & the shortest day in the Southern Hemisphere. more
The Vernal (Spring) Equinox in the Northern Hemisphere is in March. In the Southern Hemisphere it's in September. more
There are 4 primary phases of the Moon - new, first quarter, full and third quarter, and 4 intermediate phases - waxing crescent and gibbous, and waning gibbous and crescent. more
The March equinox around March 20-21 is the spring (vernal) equinox in the northern hemisphere and fall (autumnal) in the south. Night and day are nearly the same length. more
A total lunar eclipse occurs when the Earth's shadow blocks all the Sun's light from directly reaching the Moon's surface. more
Dates and tips on how and where to view Meteor Showers all over the world. more
Learn more about how seasons are defined and when they begin and end. more
Everything you need to know about total eclipses of the Sun. more
With the right equipment, a little time and planning, you can take great pictures of the Moon. more
Tips and tricks for taking breathtaking photographs of the sunsets and sunrises. more
Equinoxes don't have exactly 12 hours of day and night all over the world, like many believe. Such days do happen, but depend on the latitude of your city. more
Solar and lunar eclipses, why they occur, when the next eclipse is, and from where you can see them. more
The Winter solstice in the Northern Hemisphere is in December, while in the Southern Hemisphere it's in June. more
The Summer Solstice in the Northern Hemisphere is in June, while in the Southern Hemisphere it's in December. more
A Micromoon is the name given to a full Moon that occurs when the moon is farthest from the Earth, apogee. more
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
Moonbows occur when the Moon’s light is reflected and refracted off water droplets in the air. more
An annular solar eclipse occurs when the Moon moves in front of the Sun but does not cover the it completely. more
Learn more about the customs, traditions and events surrounding the December solstice. more
In 2015, the Orionid meteor shower will be visible from October 2 to November 7. The shower is expected to peak on the night of October 20 and 21, 2015. more
A partial solar eclipse is more common than a total solar eclipse, and happens when the Moon only partially covers the Sun. more
Aurora borealis or northern lights and aurora australis or southern lights are natural electric phenomena that creates bright and colorful light displays in the skies. Auroral light displays are common within the Arctic and the Antarctic Circles. more
The Draconid meteor shower will peak on October 9, 2015. Northern Hemisphere viewers can view the shower right before nightfall. more
Find out what you can do to protect your eyes during a solar eclipse. more
The Geminids meteor shower can be seen from December 4-17. In 2015, the shower will reach its maximum on December 13 and 14. Find out where, when and how you can see the shower. more
The 2015 Leonid meteor shower is expected to peak between November 17 -18, 2015. more
The Lyrid Meteor Shower will peak on Wednesday, April 22 2015 and the best place to watch it is in Europe after midnight. more
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
A partial lunar eclipse happens when the Earth moves between the Sun and the Moon, but they are not precisely aligned. more
Learn more about atmospheric phenomena that are created by the reflection and refraction of light by ice crystals in the atmosphere. more
In many Northern Hemisphere cultures, the June solstice is associated with holidays, feasts and celebrations. more
The 2016 Quadrantids meteor shower is expected to peak on January 4, 2016. Quadrantids, the first major shower of the year is best viewed from locations in the Northern Hemisphere. more
Instructions on how to make a pinhole projector using household items to safely see a solar eclipse. more
The 2015 Eta Aquarids are expected to peak on May 5 and May 6, 2015. more
In 2015, the Ursids will peak in the early hours of December 22 and 23. more
Comets are small celestial bodies that orbit the Sun. Made of dust and ice, they are remnants of Solar System's formation. more
Everything you need to know about the May 2014 Camelopardalids meteor shower. more
The 2012 Venus transit will be the last chance to view this phenomenon for over 100 years more
At 7:24 PM UTC (19:24) on Friday, February 15, 2013, an asteroid called 2012 DA14, will come close to the Earth, closer than any other asteroid of similar size has ever come in recorded history. more
Also known as false dawn, zodiacal lights are rare optical phenomena that occur around sunset and sunrise in early spring and late fall. more
Everything you need to know about Comet Encke (2P/Encke). more
Three comets - comet ISON, comet Lovejoy and comet Encke will grace the winter skies in 2013. more
Comet Lovejoy (C/2013 R1) is one of 3 comets that will grace the skies in November, 2013. more
Everything you need to know about Comet ISON or C/2012 S1. more
2013 is going to be a good year for comet watchers, with at least 3 comets that may be visible without the aid of sophisticated equipment. more
What do astronomers really mean when they use those technical terms? more
You can help name the new official Time Zone on Mars by voting during the month of April. more
10 things you may not know about the December Solstice. more
10 things you may not know about the March Equinox. more
The March 20, 2015 Total Solar Eclipse will be a grand and rare sight. Here are 10 facts not to be missed. more
Blood Moon is sometimes used to describe a Total Lunar Eclipse. When the Earth casts its shadow on a Full Moon and eclipses it, the Moon may get a red glow. more
The April 4, 2015 Total Lunar Eclipse is the third eclipse in a series of four Total Eclipses of the Moon called Eclipses of the Blood Moon. 10 facts about the eclipse. more
Solar eclipses happen when the Moon moves between Sun and Earth, blocking the Sun's rays and casting a shadow on Earth. more
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
A lunar eclipse can be viewed with the unaided eye unlike solar eclipses, which have special safety requirements. Viewing tips. more
Find out why a totally eclipsed Moon turns a shade of red. more
Learn more about these space rocks orbiting the Sun. more
On Monday, January 26, 2015 asteroid 2004 BL86 will fly by at only 3 times the distance of the Moon from the Earth. It will be the largest celestial body to come this close to Earth until 2027. more
Asteroids are small rocky objects orbiting the Sun. 10 things that you might not know about these planet-like celestial bodies that can crash into the Earth and create havoc. more
Learn more about different kinds of twilight, dawn and dusk. more
Earthshine refers to the phenomenon when light from the Earth illuminates the Moon. Find out when you can see it. more
Why doesn't the year's earliest sunset not occur on the Winter Solstice, even though it is the shortest day of the year in terms of daylight? more
11 things you may not know about the June Solstice. more
Measure the sky and find out distances between celestial objects using your hands and fingers. more
Midnight Sun, or Polar Day, means that at least a sliver of the Sun's disk is visible above the horizon 24 hours of the day. more
Seasons are caused by the Earth's rotation around its axis. more
Sky watchers have wonderful sights still to come in 2015. Meteor Showers will peak, a Partial Solar Eclipse and the last Blood Moon in a tetrad awaits. more
An Analemma is a graph or plot that shows the position of the sun in the sky at a single location and at the same time of the day throughout a year as measured by a sundial. more
How to tell time at night when you don't have a watch or a smartphone readily available and are in the Northern Hemisphere. more
It can be the 3rd New Moon in a season of 4 New Moons or the second New Moon in a calendar month. The next Black Moon is in October, 2016. more
A Blue Moon is a type of a full Moon. It can also be a rare Moon that looks blue due to atmospheric dust particles. more
Find out Full Moon names and their meanings by month and seasons, common in many North American cultures. more
Comet Lovejoy (C/2014 Q2) will become visible to the naked eye in the next few days. more
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