The dazzling spiral galaxy in this Hubble Space Telescope image is UGC 5460, located about 60 million light-years away in the ...

The "needle in the haystack" discovery of a powerful explosion from a mysterious unknown object outside our galaxy has ...

Fast blue optical transients ... That’s because it didn’t explode spherically like, well, every other explosion ever. This on seems to have exploded in a 2D disk. Musk says shutting down ...

The red and blue is a result of the gases from the explosion, while the star has turned into a small, bluish body called a white dwarf (represented by the symbol PK205+14.1 in the image below).

Although the blue lurker looks like a classic sunlike star, it spins much faster because ... like Type Ia supernovas — a landmark type of explosion used to measure the universe's expansion ...