Archaeological sites such as Stonehenge were designed to align with the Sun's position on specific days, primarily solstices. Earth's precession, a 26,000-year cycle, shifts the Earth's axis but does ...

The sun arrives at the December solstice at 10:03 a.m. EST on Dec. 21. This is the farthest south the sun gets in the heavens; it begins its six-month return northward at the moment winter begins in ...

After the Big Dipper, probably the best known grouping of stars in the sky is the constellation Orion. Lying on the celestial equator, Orion is an "equal opportunity" constellation, visible from all ...

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 ...

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 ...

Spring is about to, well, spring! At least, in the Earth’s Northern Hemisphere. This year’s official onset of spring occurs Saturday at 10:32 a.m. Astronomers are fond of saying that the first day of ...

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 ...