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 ...

To astro-beginners, the night sky can seem like a funhouse of random dots. For those starting out in the astronomy hobby — maybe you bought a cool telescope and suddenly want to know the sky — there ...

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 ...

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 someone who has spent thousands of hours observing the night sky, I like to think that I’m pretty familiar with it and able to navigate my way around with some ease. That’s certainly true on the ...

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.