From worlds that rain iron and glass to diamond worlds and planets that have escaped the grip of their parent stars, here are 10 of the most extreme alien planets.
A high-altitude balloon mission would investigate a controversial way to reduce global temperatures.
A fast radio burst was detected from within our galaxy for the first time. We may be closer to uncovering its origin.
To better understand the universe, we may need to kill off one of the most important theories of all time.
Did an unidentified flying object really crash land at a New Mexico ranch in 1947, only to be hushed up by the government?
These violent openings are windows into the inner workings and origins of our neighboring planets and their moons.
Leading scientists have long pondered how matter gives rise to our subjective experience of reality and believe consciousness could even permeate space and time.
Gagarin became the first of humankind to blast off into space on April 12, 1961, but rumors continue to circulate that another cosmonaut had beaten him to the punch days before.
According to the New Testament, the Star of Bethlehem led the three wise men to Jesus' birth. Here are a few theories about what the star really was.