Voluminous clouds of cosmic dust permeate our galaxy, but only recently has software allowed detailed observations of the ...

When we observe distant celestial objects, there is a possible catch: Is that star I am observing really as reddish as it ...

Astronomers say they have traced a mysterious pulsing in the Milky Way to a surprising source: a dead star locked in a dance ...

Astronomers from the University of Arizona have uncovered astonishing details about a galaxy that existed when the universe ...

The discovery of the dwarf galaxy Andromeda XXXV --located roughly 3 million light-years away and the smallest yet found in the Andromeda system -- is forcing astronomers to rethink how galaxies ...

The vernal equinox occurs as Mercury stands still in Pisces and several of Jupiter’s moons transit in the sky this week.

At the Harvard College Observatory in years around 1900, women were hired to make measurements of astronomical data and do ...

BL Lacertae blazar shifts between classifications faster than expected. It shows record X-ray activity and challenges current ...

Scientists have discovered an extraordinarily massive black hole weighing an astounding 36 billion solar masses, challenging our current theories of galaxy evolution.

Blazars are active galaxies that emit narrow jets of ionized matter from their centers, aimed towards Earth. Depending on ...

Cherry Springs, isolated atop its mountain and surrounded by the 265,000-acre Susquehannock State Forest, remained a haven of darkness. In 2000, the park was designated as Pennsylvania’s first Dark ...

Cherry Springs State Park sits atop a 2,300-foot mountain in the Susquehannock State Forest, surrounded by some of Pennsylvania’s most pristine wilderness. Named for the large black cherry trees that ...