The person who argues interstellar object Oumuamua could have been an alien spacecraft now says a meteor that hit Earth’s ambiance in 2014 additionally got here from elsewhere within the Milky Way, maybe carrying life with it.
Harvard astronomer Abraham “Avi” Loeb and undergraduate scholar Amir Siraj have drafted a new paper figuring out the second cosmic object to go to the inside solar system from past (Oumuamua being the primary). The article has been submitted for publication in The Astrophysical Journal Letters, however, has but to be peer-reviewed.
In different phrases, following Siraj and Loeb’s calculations, one thing occurred a protracted, very long time in the past in a star system far, far away that induced some space debris to be launched into the interstellar house at excessive velocity. After touring some unknown variety of gentle-years at extreme speed, this interstellar interloper the dimensions of a kitchen oven smacked into our ambiance on Jan. 8, 2014.
The ensuing meteor was noticed within the sky that day burning up just north of Manus Island, on the coast of Papua New Guinea.
On time it was merely one other fireball meteoroid that was dutifully added to NASA’s database of such events. It was solely when Siraj went back and analyzed three many years of meteor information that it stood out as one of many quickest shifting objects that additionally did not seem like sure (that’s to say, orbiting) any more analytical purpose within the solar system.
Loeb says their calculations recommend that an interstellar object may influence Earth’s ambiance roughly as soon as per decade. If it passes muster, it’s going to be the first documented case of an object from past the solar system colliding with our planet. Loeb additionally says it gives a brand new option to hunt for other interstellar bodies.