More A second "new star" has unexpectedly appeared in the night sky, less than two weeks after a near-identical point of light first burst into view without warning. These never-before-seen "stars ...

Betelgeuse, one of the brightest stars in the night sky, may not be alone. And its potential companion may be responsible for one of the star’s enduring mysteries.

The stars above the map’s horizon now match what’s in the sky. The all-sky map shows how the sky looks at: midnight July 1 11 p.m. July 15 10 p.m. July 31 Planets are shown at midmonth ...

Two stars are exploding in the southern sky. Called V462 Lupi and V572 Velorum (shown in this telescope image), both are so bright that they can be seen with the naked eye at the same time.

Remember, the lower an object's magnitude, the brighter it is in the night sky. For reference, the human eye is capable of seeing stars with a magnitude of +6.5 or greater under dark sky conditions.

One of the best known and most luminous stars in the night sky, Betelgeuse has long intrigued anyone who has gazed up and seen its reddish tint, which is visible to the naked eye. What has most ...

Betelgeuse, one of the brightest stars in the night sky, may not be alone. And its potential companion may be responsible for one of the star’s enduring mysteries.