From magnification to letting in enough light at night, here's how to choose the perfect monocular for stargazing and ...

An alignment means multiple planets are all visible in the sky from Earth. Three to eight planets constitutes an alignment.

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The space rock - named (887) Alinda - is so large it should be viewable with ordinary binoculars. With an estimated diameter ...

A rare asteroid the size of Salford is about to fly close to Earth. The space rock, named (887) Alinda, is so large that ...

The research group observed a galaxy nearly 6.5 billion light-years from Earth; when the universe was half its current age.

While the extra-galactic stars provided a microlensing effect, large clusters of dark matter provided a macrolensing effect.

Alinda is one of the five largest near-Earth asteroids, coming closer than 9.3 million miles until the year 2200.

The large asteroid 887 Alinda, more than 4 km wide, is approaching the Earth as close as possible. Such close contact is the first in the last 100 years.

A large asteroid is about to make its closest approach to Earth in 100 years. Over the coming days, it's so close you should be able to observe it yourself with only the aid of binoculars.

Taking advantage of a cosmic 'double lens,' astronomers resolved more than 40 individual stars in a galaxy so far away its light dates back to when the universe was only half its present age.

This view happens every 13.7 to 15.7 years, with the next side-on view taking place on March 23, 2025. After that, we will begin to see the underside of Saturn's rings and its south pole, another view ...