Green visitor to pass through the solar system
Mara Bujor
Unfortunately for some, the green visitor is not an alien coming to greet us but something else, even though it also comes from far, far away. On the 24th of February the comet Lulin will pass within 61 million kilometers of Earth, thus being able to be seen with the naked eye from some locations.
This is the first time the comet is visiting the solar system, passing at a distance that is about 41% of the one between Sun and Earth and 160 times farther than the Moon. The Lulin comet was...