The findings reveal unusual chemical signatures and offer new insights into the behavior of novas beyond the Milky Way.

The latest discovery marks the furthest detection of oxygen ever made and defies what we thought about how galaxies formed in the early universe.

A European space telescope launched to explore the dark universe has released a trove of new data on distant galaxies.

Though tiny, this newfound satellite galaxy around M31 offers big lessons — and questions — about how galaxies evolve.

Fluffy strands of cosmic gas and dust illuminated by bright young stars form a beautiful cloudscape in a neighboring nebula.

Answer: For near stars, astronomers use a method called parallax. During Earth’s orbit, near stars seem to shift their position against the farther stars. This is called parallax shift. By ...

A supercluster is usually composed of hundreds or even thousands of clusters of galaxies, and these clusters are ...

The Milky Way is one of the biggest in the observable universe: Even if you traveled at the speed of light, it would take 100,000 years to go from one end of our home galaxy to the other.

Andromeda XXXV is only about 20,000 times more massive than our Sun—very small, even for a satellite galaxy. For comparison, ...

There is a supermassive black hole at the center of nearly every big galaxy—including ours, the Milky Way (it's called ...

Launched Tuesday night from California by SpaceX, the Spherex observatory will survey the sky every six months from an orbit ...

Both the Sun and Moon look better and more natural to me when not ... but it also means that many objects will be too large ...