Imagine floating in space, gazing on a frozen white orb. The ball hangs in the void, lonely and gleaming in the light from its star. From pole to equator, the sphere is covered in a thick crust of ice.

The first life on Earth formed four billion years ago, as microbes living in pools and seas: what if the same thing happened on Mars? If it did, how would we prove it? Scientists hoping to identify fossil evidence of ancient Martian microbial life have now found a way to test their hypothesis,

"We're arguing that intelligent life may not require a series of lucky breaks to exist." The concept of the "great filter" to explain why so far we seem to be alone in the universe is based on erroneous assumptions,

From time to time, the U.S. military shows glimpses of its X-37B spaceplane, which can travel to space for years at a time. We just got another glimpse. The U.S. Space Force — which took the reins from the Air Force's expansive military operations in space in 2019 — has released a view the robotic craft took from Earth's orbit.

Ukraine and the United States have prepared a draft agreement that would give Washington access to Kyiv’s rare earth minerals in exchange for unspecified security guarantees, the Ukrainian government said Wednesday.

An international research team led by the University of Vienna has discovered that the solar system traversed the Orion star-forming complex, a component of the Radcliffe Wave galactic structure, approximately 14 million years ago.