April evenings provide views of the two brightest planets, though only one stands out. Jupiter gleams at magnitude –2.1 and ...

The equatorial coordinate system projects Earth's latitude and longitude onto the celestial sphere, using declination (angular distance from the celestial equator, measured in degrees) and right ...

The autumn equinox is now upon us! Today marks the moment that the sun crosses the celestial equator, ushering in the beginning of astronomical autumn in the northern hemisphere, which brings with it ...

As the weather gets warmer and clearer skies return, make plans to stargaze over the next several months. Whether you are staying at home or heading out on vacation, your latitude location will play a ...

A week ago I made a 45-minute time exposure of the southern sky featuring the planet Mars. As the Earth rotated on its axis, the stars trailed across the sky. But take a closer look at the photo and ...

The Griffith Observatory invited the public to join them on Thursday to welcome the start of spring, also known as the vernal equinox. A popular event, it drew a crowd to this annual moment when ...

The Sun crosses the Celestial Equator this week, but what exactly does that mean? This week, we finally see the end of Winter, as the Vernal Equinox arrives to kick off the new season of Spring for ...

Astronomical fall begins on Sept. 22 as the sun moves southward across the celestial equator. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

This week, we finally see the end of Winter, as the Vernal Equinox arrives to kick off the new season of Spring for this year. Friday, March 20, is the first day of spring for 2026! On that day, both ...