According to a tenet scientists call the cosmological principle, our place in space is in no way exceptional. But recent ...

This is called the “heat death” of the Universe, but you can think of it instead as the death of heat. There will be no more ...

The observable universe is a ball-shaped region of the universe comprising all matter that can be observed from Earth or its space-based telescopes and exploratory probes at the present time, because ...

The atmosphere, a thin veil of molecules enveloping Earth, reaches about 20 miles (32 kilometers) above the planet's surface.

Over 40 stars in a galaxy billions of light-years away were photographed, offering a glimpse into an era when the universe ...

But from where Earth sits in the observable universe, our view extends more than 13 billion years into the past. Far outside our Local Group, astronomers have found galaxies so metal-poor and so ...

Two Indian physicists have theoretically proposed a path-breaking idea which could fundamentally change the current view ...

Astronomers setting their sights halfway across the observable universe recently identified the largest amount of individual stars ever detected so far away – a feat once considered near-impossible.

This is just a small part of the universe—less than 1% of the entire observable universe—but it is our galactic neighborhood. And it is good to know the geography of your neighborhood.