Giant space cigar: New observations show weird interstellar asteroid is ‘like nothing seen before’

A few weeks ago, something surprising happened when astronomers noticed an odd object moving quickly through the Solar System. Being on a large looping trajectory, it was first thought to be a previously unknown comet, but then calculations showed that it couldn’t have originated from …

Read MoreGiant space cigar: New observations show weird interstellar asteroid is ‘like nothing seen before’

NASA’s OSIRIS-REx spacecraft to search for Trojan asteroids near Earth

Artist’s depiction of OSIRIS-REx in orbit around Bennu. Currently, the spacecraft is searching for other Trojan asteroids near Earth. Image Credit: NASA

Asteroids are some of the most ancient objects in the Solar System, relics left over from the time when the planets first started forming and evolving. For this reason, scientists are very interested in them, since they can provide clues as to how this process occurred. Most asteroids orbit the Sun in a broad belt between Mars and Jupiter, but they can be found elsewhere in the Solar System as well. NASA’s OSIRIS-REx spacecraft is now en route to one of these asteroids, called Bennu, which it will study and then bring a sample back to Earth. While on the way there, however, OSIRIS-REx will also be searching for other asteroids, called Trojans. These have regular orbits which place them either just before or just behind a planet, including Earth. The spacecraft will be on the lookout for some of these Trojans near Earth this month as it travels toward Bennu.

Read MoreNASA’s OSIRIS-REx spacecraft to search for Trojan asteroids near Earth