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Visualize looking from our Milky Way galaxy’s flat star-rich disk, into intergalactic space.
Almach looks like 1 star to the eye and like a colorful duo through a telescope. But today we know Almach as 4 stars.
Another chance to see meteors in this annual shower – between midnight and dawn – Saturday.
Here are all the details you need for 2017’s Leonid meteor shower, at its best on the mornings of November 17 and 18.
With clock-like precision, the star Delta Cephei doubles in brightness every 5.36 days. You can notice this brightness change with the eye alone.
Achernar – aka Alpha Eridani – is the 9th brightest star in the sky and the flattest star known.
November’s often called the month of the Pleiades, because it’s when this star cluster – aka the Seven Sisters – shines from dusk until dawn.
Every year, the Big Dipper (Great Bear) descends to its lowest point in the sky on November evenings.
The Andromeda galaxy is the most distant object we can see with the eye alone. Try using the Great Square of Pegasus to find it in a dark sky.
The 2 bright stars near the moon both Tuesday and Wednesday are Castor and Pollux in the constellation Gemini, legendary Twins of sky mythology.
As seen from around the world, the moon and star Aldebaran will cross the sky together on this night. From parts of the world, the moon will pass in front of Aldebaran.
The Northern Hemisphere’s full Hunter’s Moon for 2017 falls the night of November 3. Will it be bigger, brighter, more colorful?
How to see the constellation Pisces. Plus sky lore and science.
The 4 cross-quarter days fall between equinoxes and solstices. Halloween is the spookiest one – derived from a sacred festival of ancient Celts and Druids – coming as days grow short and nights long in the Northern Hemisphere.
You need to be in Earth’s Southern Hemisphere to see the Small Magellanic Cloud. It looks like a luminous cloud, but it’s really a dwarf galaxy, orbiting our Milky Way.
At mid-northern latitudes, Arcturus sets about 2 hours after sunset now, at the same point on the horizon as the summer sun, an echo of long summer afternoons.
What’s the scariest star in all the heavens? Around Halloween, look for Algol – a star named for a demon!
Find the zodiacal constellation Aquarius. The moon will be there, too. Neptune can’t be seen in the moon’s glare, but it’s fun to imagine!
The star name Algol comes from the Arabic for “head of the demon.” Come to know this star, and point it out to your friends this Halloween.
Come to know constellation Auriga’s bright star Capella and the little asterism called The Kids.
Leonid over Georgia