Astronomers have discovered that "super-Earth" planets may exist on wider orbits than previously thought — and this implies ...

The planet is "crumbling to pieces," shedding the equivalent of Mount Everest’s mass every 30.5-hour orbit and will be ...

New research suggests that the largest cosmic structure is even bigger and closer to Earth than we knew. It goes against ...

Prebiotic molecules central to life's earliest metabolic processes—chemical reactions in cells that change food into ...

Fifty-five years earlier, on April 24, China's first artificial satellite, Dongfanghong-1, was launched, heralding the nation ...

The stars are surrounded by diffraction spikes, which are the starburst-like radiating lines that appear around bright ...

The "Blue Marble" was the first photo of the whole Earth and the only ever taken by a human. Fifty years on, new images of the planet reveal visible changes to the Earth's surface.

Ever wondered why stars twinkle but planets don’t? Discover the simple science behind this sky mystery and how scientists ...

After a Blue Origin rocket brought Katy Perry to space, some celebrities hit back at what they saw as a stunt disguised as female empowerment.

Related: 10 devastating signs of climate change from space How well do you know Earth? Take the Earth Day quizzes to find out. Earth Day is an annual event that started in 1970 when 20 million ...