An amateur astronomer has discovered what is believed to be a comet that has come from a distant solar system.
Scientists have revealed that a meteor from another star system may have collided with the Earth 5 years ago.
NASA has confirmed that the probe has become the second spacecraft ever to leave the heliosphere.
SETI has been attempting to determine if the first known interstellar visitor is under intelligent alien control.
On November 16th 1974, the Arecibo Observatory sent a message of greeting towards globular star cluster M13.
Harvard astronomers have suggested that the first known interstellar visitor could be an alien probe.
Originally classed as an asteroid, the object known as 'Oumuamua is now believed to be a comet.
An asteroid believed to be from another solar system has been found orbiting the Sun in the wrong direction.
Researchers believe that it is very likely that the interstellar asteroid came from a binary star system.
NASA has activated the iconic interstellar probe's backup thrusters for the first time in 37 years.
An asteroid thought to have come from interstellar space is carrying organic carbon-based molecules.
Scientists believe that interstellar dust streams might be able to transfer organisms between planets.
For the first time ever, astronomers have spotted what is thought to be a visitor from a distant star system.
Professor Stephen Hawking has teamed up with NASA to design and develop an interstellar nano-starship.
NASA's Cassini spacecraft has picked up particles of dust originating from outside our solar system.
An ambitious new project is aiming to make interstellar travel a reality within just three decades.
Astronomers have identified the first signs of life-bearing chemistry at the center of the galaxy.
NASA's legendary space probe is now believed to have finally exited the solar system after 36 years.
Researchers have discovered that organic material may be hitching a ride in interstellar dust particles.
NASA's Voyager 1 spacecraft has become the first ever man-made object to reach interstellar space.