Astrophysicists are back to square one in trying to attach a conventional explanation to the oddity presented by ʻOumuamua, the first known interstellar object to pass through the Solar System. While making its close pass to the Sun, ʻOumuamua sped up ever so slightly, prompting at least one prominent researcher to speculate
The levels of carbon dioxide found in the atmosphere in modern times have been found to be nearly ten times higher than any other time since the extinction of the dinosaurs, 65 million years ago. The event that came the closest to today’s CO2 levels, the Paleocene-Eocene Thermal Maximum (PETM), occurred 55.5 million years ago, where a spike in greenhouse gasses caused global temperatures to increase by 5–8 °C over what we’re experiencing today. While the existence and cause of the PETM is well established, the source of the massive amount of CO2 that caused the temperature spike has been a complete mystery to scientists.
September appears to be yet another doomsday month, so head for your shelters. Or perhaps not.
The latest doomsday prediction convincing the unwary concerns a comet that is supposed to collide with the Earth, this one with a near-future arrival date of mid-September. But what is the validity of this new prophesy?
Originating with an announcement by self-proclaimed prophet, Reverend Efrain Rodriguez, and propagated by conspiracy blogger Lyn Leahz, the prediction is that there is a 2.5 mile-wide comet that is emanating "hellish mystery sounds", that is on a collision course with the Earth, and will cause unprecedented climatological upheaval upon impact.
After an amazing ten year journey, the Rosetta mission landed its module Philae on the surface of Comet 67P/Churyumov–Gerasimenko at 16:03 GMT on Wednesday.
Rosetta was launched on 2 March 2004 on an Ariane 5 rocket, and has already made history by becoming the first spacecraft to orbit a comet after it reached its long-awaited destination on August 6th 2014.