Cosmologists have long wondered whether dark energy and the accelerating expansion of the universe is an illusion. Now the evidence backing this idea is mounting.
One of the most common features found at large volcanoes are calderas, formed by the collapse of the land due to eruption. The scale of these features varies a lot depending on if you're on Earth or Mars.
From vicious storms and relentless global heating, to volcanic eruptions and shimmering aurora, compelling images help tell the story of a drama-filled year.
Discover how probing the components of the half-asteroid, half-comet hybrids reveals that carbon dioxide was present during the solar system’s formation.