On April 15, 2018, asteroid 2018 GE3 set a record as the largest-known asteroid of its size to make a close pass to the Earth–and at less than half the distance between the Earth and the Moon, that’s a fairly close shave. The 48 to 110 meter (157 to 361-foot) object is between three to six times the size of the object that exploded over Chelyabinsk, Russia in 2013.

2018 GE3 was only spotted by the Catalina Sky Survey the day before its close, 193,000-kilometre (120,000-mile) pass, moving at 29.5 km/s, or 66,000 mph. As it whizzed away from us it passed even closer to the Moon, only one-third the distance between La Luna and Terra Firma.

Researchers may have discovered direct evidence of a former sister planet that resided in our Solar System, but was obliterated during an unknown cataclysm that occurred billions of years ago. It is theorized that the Solar System may have had as many as ten such lost planets early in its history, but this new evidence takes such theories and brings them that much closer to reality.

The Chinese space station, Tiangong-1, re-entered the Earth’s atmosphere on April 1, breaking up over a stretch of the South Pacific roughly 100 kilometers (62 miles) northwest of Tahiti, according to the China National Space Administration. This was confirmed by the United States Air Force 18th Space Control Squadron, an organization tasked with tracking artificial objects in orbit. Due to CNSA’s inability to control the timing of Tiangong-1’s reentry, there were concerns over damage or injuries that might be caused by debris that might have survived reentry; however, none have been reported.

In a few months, the orbit of a star deep in the core of the Milky Way will cause it to pass within 18.4 billion kilometers (11.4 billion miles) of the supermassive black hole at the center of the galaxy, Sagittarius A*. This event is of particular interest to physicists, as the plummeting star, S0-2, will speed up to 3 percent of the speed of light as it slingshots around its supermassive parent–a prime opportunity to test Einstein’s Theory of General Relativity.