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Top Space Events of 2021!
The Best Sky Watching...
Welcome to 2021—a year full of spectacular astronomical events! What stargazing and sky watching events should you keep an eye out for? Here are our top picks of the year,...
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The Star of Bethlehem
Some things just don’t belong together, like the Three Stooges at an art opening. Yet this month,...
Spooky Sky: We Dare You to Go Out!
The Sun is setting earlier and earlier: It’s really dark. The leaves are dropping quickly now, so...
Looking for Planet Nine
What is Planet Nine? Find out more about a possible new planet in our solar system. Everyone likes...
How to See Comet Catalina
Everyone loves comets. When we get a bright one every 15 or 20 years the world goes nuts. We...
When is the Darkest Day of Winter?
The darkest afternoon—our earliest sunset—is upon us. For most of us, the darkest day of winter...
What Star is Directly Overhead?
Look straight up at a star—and see where you are heading! Something very cool is overhead. Next...
Should Pluto be a Planet?
Should Pluto be a planet? Having now seen some of our first-ever close-up pictures of Pluto, let’s...
October Planet Show Extends its Run
The action remains glued to the morning sky. We’re talking 6:00 AM. Normally, planet conjunctions...
Four Planets Meet in the October 2015 Night Sky!
The wild morning display continues! See four planets performing the year’s best conjunctions. It’s...
First Day of Spring 2021: The Spring Equinox
In 2021, the spring equinox occurs on Saturday, March 20. This event marks the astronomical first...
Summer Solstice 2021: The First Day of Summer
In 2021, the June solstice occurs on Sunday, June 20, marking the start of summer in the Northern...
Next Full Moon
When is the next full Moon? See our Full Moon Calendar for 2021 for the U.S. and Canada. Get Full...
Planet Rise & Set Calculator
When will the planets be visible tonight? Use our Planet Rise and Set Calculator to find out when...
When Do the Seasons Start in 2021?
When do all of the four seasons—spring, summer, fall, and winter—start and end? Find your equinox...
When Is Easter 2021? | How Easter's Date is Determined
Easter 2021 will be observed on Sunday, April 4! Find out how the date of Easter is determined, why...
Setting Chicken Eggs by the Moon's Sign for 2021
Here are best days to set eggs by the Moon for 2021.According to tradition, this age-old practice...
Fishing Calendar for 2021
When is the best time to go fishing? See the best fishing dates and times for 2021 from The Old...
Night Sky for January 2021
Look up! It’s the January 2021 Sky Watch! This month, Jupiter and Saturn are still bright in the...
Sunrise & Sunset Calculator
Our sunrise and sunset calculator displays the Sun rise and set times for the U.S. and Canada. The...
When Is the Next Eclipse? | Eclipse Dates for 2021
See which eclipses will be visible during 2021 across North America.
Moonrise & Moonset Calculator
When will the Moon be visible tonight? Use our Moonrise and Moonset Calculator to find out when the...
The Best Sky Watching Events of 2021
Welcome to 2021—a year full of spectacular astronomical events! What stargazing and sky watching...
What Is a Supermoon?
What is a supermoon? We agree that it’s a catchy word—and anything that encourages us to explore...
Meteor Shower Calendar 2021: When Is the Next Meteor Shower?
When is the next meteor shower? Our Meteor Shower Calendar for 2021 has dates for all the principal...
Bright Sirius Is the New Year Star
Want a cosmic way to ring in the New Year? On New Year’s Eve, the brightest star visible from our...
Full Moon for January 2021
The full Wolf Moon rises on Thursday, January 28, 2021. Learn more about when, where, and how to...
Orion the Hunter Reigns in the Winter Sky
All of Orion’s stars are easy to spot in the winter sky. We’re in a period of dark, moonless,...
Night Sky Map for January 2021: The Brightest Sky of the Year
Our January 2021 Sky Map hones in on the best of the month’s night sky—with accompanying text—so it...
Winter Solstice 2020: The First Day of Winter
The winter solstice happens on Monday, December 21, 2020. This is the astronomical first day of...
What Are Perihelion and Aphelion?
Earth reaches its closest approach to the Sun for the year 2021 on January 2. We call this point in...
Mercury Retrograde Dates for 2021
Mercury’s first period of retrograde motion in 2021 lasts from January 30 to February 21! According...
The Reason for the Seasons
What causes our four seasons—winter, spring, summer, and fall? People puzzled over this for...
6 Ancient Sites Aligned With the Solstice and Equinox
Across time, people have marked the changes of seasons—sometimes in dramatic ways! Here are six...
8 Tips for Watching the Geminid Meteor Shower
The most active meteor shower of the year peaks the night of Sunday, December 13. These are the...
Geminid Meteor Shower 2020
Get ready for the Geminids! The great Geminid Meteor Shower peaks the night of December 13, 2020....
The Darkest Time of the Year (is Not on the Solstice)
When is the earliest sunset of the year? Many folks think it’s on the winter solstice. But the...
Great Conjunction 2020: Jupiter and Saturn Meet on Solstice
A rare, spectacular sky event is about to unfold: the greatest conjunction ever! It will be more...
Night Sky for December 2020
What’s up in the December 2020 night sky? Get ready for the Great Conjunction! This historic...
Night Sky Map for December 2020: Rotation of the Stars
Ever noticed how the stars move? The entire sky appears to rotate around the North Star above us. (...
Full Moon for December 2020
December’s full Moon rises on Tuesday, December 29, 2020. The Old Farmer’s Almanac will reveal...
Predicting Weather with a Wishbone
Can you really predict weather with a wishbone? Back around the turn of the last century, in the...
Night Sky for November 2020
Welcome to the Sky Watch for November 2020. See the Moon and orange Mars on Wednesday, November 25...
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