Artist's concept showing a proposed Mars ocean, some 4 billion years ago. According to some researchers, the young planet Mars then would have had enough water to cover its entire surface in a liquid layer about 500 feet (140 meters) deep. But it's more likely the liquid would have pooled to form an ocean occupying almost half of Mars’s northern hemisphere, in some regions reaching depths greater than a mile (1.6 km). Read more. Image via ESO/M. Kornmesser.
It's likely Mars was once a water world with rivers, lakes and maybe even an ocean. New research lends support to the possibility that an asteroid slammed into Mars' ocean 3.5 billion years ago, creating a vast tsunami. Read more.
On Monday, scientists said July 2019 was the warmest month Earth has experienced since record-keeping began more than a century ago. How hot was it? Read more.
On Thursday evening, the dark side of the waxing moon points in the direction of the star Antares and the king planet Jupiter. You won't have any trouble distinguishing the star from Jupiter. The king planet outshines Antares by over 20 times. Read more.
