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 ...

When it comes to locating objects in the night sky, how does one convey its precise position? The sky is divided into a scattered pattern of 88 constellations of various sizes and shapes covering ...

How much of the sky can you see at any one time? This, of course, assumes you are looking up from a wide-open, flat field or out on an ocean liner with nothing but a flat horizon no matter which way ...

Mars remains the most visible of the evening planets in September, but the moon and Saturn have a special daylight encounter on the morning of Sept. 10. Fall officially begins when the sun crosses the ...

After another long winter, we could all use some spring. Yes, winter sports are great, but many of us are ready to turn the page. It’s time for spring 2023 to begin, at least astronomically, and it ...

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 ...

Today, I want to talk about the equatorial coordinate system. Start with this: What if we could project Earth's coordinates of longitude and latitude into the sky? Latitude wouldn't be a problem, but ...

How much of the sky can you see at any one time? This, of course, assumes you are looking up from a wide-open, flat field or out on an ocean liner with nothing but a flat horizon no matter which way ...