Researchers have detected phosphine, a chemical only produced by microbes and factories, in the clouds over Venus.

Five major wildfires have wiped out towns and clouded the skies of Oregon with fire and ash, photos show.

SpaceX founder and chief executive Elon Musk said several more short hops are planned before a test version of Starship aims for a high altitude.

The study's findings also provide an answer to a key question of how the planet's valleys formed 3.8 billion years ago, despite the sun being weaker and Mars being at a greater distance from the sun than Earth.

The biggest, most sophisticated Mars rover ever built blasted off for the red planet Thursday as part of an ambitious, long-range project to bring the first Martian rock samples back to Earth to be analyzed for evidence of ancient life.

The U.S. space agency's $2.4 billion Perseverance mission is expected to reach Mars next February.

The Tianwen-1 launch comes as the United States plans to launch Perseverance, its most sophisticated Mars rover ever, next week.

North Atlantic right whales have been classified as critically endangered by an international conservation group, with the world population just over 400.

The U.S., for its part, is dispatching a six-wheeled rover the size of a car, named Perseverance, to collect rock samples that will be brought back to Earth for analysis in about a decade.

It's the first time astronomers have seen the green glow around a planet other than Earth.