Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby sun-like star, providing a precious peek into the dawn of our own solar system.

"For the first time, we have identified the earliest moment when planet formation is initiated around a star other than our sun." ...

Venus is still shining brightly in the early morning sky. Go out at 5 a.m. and face due east and unless it’s completely overcast, our neighbor will be impossible to miss. And if you have a look this ...

Because Pluto is so dim, you need a telescope to see it. “A backyard telescope could do it under the right conditions,” says ...