UNITED NEWS INTERNATIONAL (UNI) — Scientists say they’ve found the first evidence of exoplanets outside our Milky Way Galaxy.
A new study published Feb. 2 in The Astrophysical Journal Letters suggests a quasar galaxy nearly 4 billion light-years away is home to more than a trillion exoplanets.
Just looking into the far reaches of our own galaxy isn’t easy.
Astronomers needed the world’s largest telescope and a technique called microlensing to peer outside the Milky Way.
Microlensing happens when large objects bend and magnify light from objects behind them.
This helps scientists see things that would otherwise be too far away for even NASA’s Chandra X-ray Observatory to glimpse.
The alien galaxy appears to contain exoplanets as small as the moon and as large as Jupiter.
Scientists think most of the extragalactic exoplanets wander through space without close ties to stars.