The newly discovered "blazar," which has a mass equal to 700 million suns, is the oldest of its kind ever seen and changes what we know about the early universe.

Space is already filled with plenty of mysteries, and black holes may be among the strangest. Here are some of the questions ...

Space-time may hide a bizarre new kind of black hole that causes Einstein’s theory of gravity to fail – and could solve the ...

A small black hole would plunge straight into the event horizon, while a normal star would quickly be torn apart by tidal forces. But astronomers theorize that a low-mass white dwarf, a compact ...

After decades of study, scientists sound genuinely optimistic about the possibility of detecting primordial black holes, which might explain dark matter.

Rather than relying on a cheek swab or a little blood, however, these cosmic DNA tests utilize tiny ripples in the fabric of ...

Sgr A*, at the heart of the Milky Way and clocking in at 4.3 million solar masses, is the closest supermassive black hole we ...

Researchers have discovered the largest black hole plasma jets ever in a galaxy almost 7 billion light years away from Earth.

Black holes are interesting and fascinating objects in the universe. They are highly dense areas of space where gravity is so ...

Researchers found for the first time evidence that even microquasars containing a low-mass star are efficient particle ...

A strange black hole is making scientists scratch their heads.

A cosmic mystery surrounding a black hole some 270 million light-years from the Milky Way is deepening. Now, the black hole has once again demonstrated strange features that teams of astronomers ...