"Every time we thought we had this thing figured out, something would tell us 'No, that's not right.'" For the past 16 years, a cosmic conundrum has puzzled astronomers. What caused the unusual Blue ...

Scientists have discovered a rare object called the Blue Ring Nebula, a ring of hydrogen gas with a star at its center. The properties of this system suggest it is the remnant of two stars meeting ...

Astronomers have solved the 16-year-old mystery surrounding the Blue Ring Nebula - an unusual, large, faint blob of gas with a star at its center. This object is unlike any they'd ever seen before in ...

Hubble captured a breathtaking view of NGC 6000, a spiral galaxy where blue newborn stars shine beside golden, aging ones.

The planetary nebula is SDSO1. It shines blue next to the Andromeda Galaxy. A planetary nebula consists of gas and dust emitted by a white dwarf, which is the final stage of a star's evolution. The ...

This week’s naked-eye object is the Lagoon Nebula in Sagittarius. To find it, look 5.5° west of magnitude 2.8 Kaus Borealis (Lambda [λ] Sagittarii). Around 1680, English astronomer John Flamsteed ...