Demonstrators hold a Georgian national and an EU flag as they listen to outgoing Georgian President Salome Zourabichvili ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

Achieving practical interstellar travel requires overcoming the immense challenge of reaching extraordinary velocities. To ...

An upcoming NASA mission will feature a major piece of technology designed by a team of researchers from the University of ...

A new study claims it is possible an "alien visitor" could have warped our solar system during its earliest years.

Our weekly roundup of the latest science in the news, as well as a few fascinating articles to keep you entertained over the ...

Scientists propose using relativistic electron beams to propel spacecraft, offering a new hope for interstellar travel within ...

Like stretch marks left on skin that expanded too quickly or cracks embedded in freezing ice, cosmic strings are artifacts of ...

"Chemical rockets that we use today, even with the extra speed boost from flying by planets, or from swinging by the sun for ...