Pairs of planetary-mass objects, floating freely in space, intrigue scientists with their nature and origin. With masses ...

or JuMBOs, in the Orion nebula. With masses lower than those of the smallest stars but greater than those of the most massive planets, the big question has been: Do these bodies form like stars or ...

The first two weeks of March provide a great opportunity to sight four bright naked-eye planets in the early evening sky. Low toward the west blazes Venus, which serves as a convenient celestial ...