Sign Up for Our Amazing Newsletter!
A daily update by email. Science news, great photos, sky alerts.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Posts by
Scott Levine
December full moon – a solstice full moon – on December 18-19
The December full moon is called the Cold Moon, Moon Before Yule, or Long Night Moon. It crosses high in the sky, mimicking the June sun.
December 17, 2021
What is an opposition?
Opposition is when Earth passes directly between the sun and an outer planet, placing the outer planet on the opposite side of the sun as seen from our sky.
August 21, 2021
Ecliptic is the sun’s path in our sky
The ecliptic is the path the sun takes across our sky. It's the Earth-sun plane, and, more or less, the plane of our solar system.
July 25, 2021
Can you spot the Spring Triangle?
As the Northern Hemisphere enters spring, a triangle of stars rises in the east, made up of bright beacons from three prominent constellations.
March 19, 2021
What is a conjunction?
When you hear the word "conjunction" in astronomy, you know it means 2 objects close together on our sky's dome. This post defines inferior and superior conjunctions, plus discusses conjunctions between planets, stars and the moon.
June 22, 2019
1 / 1
