A massive white dwarf and a sun-like "blue lurker" star tell a remarkable story of what was once a triple-star system in the M67 cluster.

"The discovery provides a unique cosmic laboratory for studying these mysterious objects." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A rare ...

"When I first spotted this system with a very high total mass on our galactic doorstep, I was immediately excited." When you purchase through links on our site, we may earn an affiliate commission.