Have you ever heard of Alpha Centauri? It's the star system closest to our own, and engineers now think they could make a spacecraft that could take people there in the future.

The paper presented several anomalous characteristics of the object, which could indicate that it is not a comet at all but instead a directed craft.

The interstellar visitor will pass just 30 million kilometers from Mars on Oct. 3 — far closer than it comes to Earth.

The solar system is recreated in Minecraft due to the talents of one player, showing what the planets and the Sun look like in the game.