Planet Earth

In a remarkable achievement, three new large asteroids have been found in the most elusive place: inside the orbit of Earth.

The length of our day changes slightly over a six-year period. This recent discovery has perplexed scientists for about a decade.

The "upper limit" to the size of our planets is exceeded in other stellar systems, but double Jupiter's radius seems to be the limit.

Some governments might try to “geoengineer” the planet by spraying substances into the upper atmosphere to reflect sunlight away from Earth.

On the Antarctic Peninsula, so-called snow algae are turning the snow green, which could lay the groundwork for a whole new ecosystem.

A physicist explains the molecular-level processes behind crystals, stripes, and basalt columns in nature.

The green turtles of Seychelles – once almost hunted to extinction – are now thriving again thanks to conservation efforts.

A technology that stores energy underground could make enhanced geothermal systems more cost competitive.

Seventeen natural sites possessing ancient nuclear reactions have now been found: evidence of Earth's first nuclear reactor.

From here to the limits of what we can see, here's a breathtaking illustrated logarithmic view of the Universe.