As Kennett noted in a recent article in The Current (a university press maintained by UCSB), the crater would have led to widespread destruction, characterized by biomass burning, megafaunal extinctions and global cooling. “It’s much more extreme than I ever thought when I started this work,” he said. “The more work that has been done, the more extreme it seems.”
The discovery was made possible by a Chilean group of scientists who were studying sediment layers at the well-know Quaternary paleontological and archaeological site, known as Pilauco Bajo. Years ago, these scientists recognized changes in the sediment record that were associated with the YDB impact event.
These included a “black mat” layer that coincides with the disappearance of South American megafauna fossils and human artifacts dated to the Pleistocene (12,800 years ago), indicating a severe shift in the climate. This was a major find since the vast majority of evidence for the YDB Impact has been found in the northern hemisphere.
Imagine that happening today. And here we’re obsessing over two degrees Celsius.
Better get moving on that vital SLS, so we can protect ourselves. #NotReally
I hear people saying we can't use two smaller rockets to get to the Moon because mating two payloads in Low Earth Orbit is too complex. I'm confused. We claimed our reason to build Space Station was because we would LEARN how to build things in space. Here's an example…./1
Loren Grush scored an interview with Beth Moses about her recent trip to space.
I’m always amused at people who say that no one will want to do this twice, or that the market is limited. The only real limit to the market is the affordability.
SLS is still running behind schedule. It is very likely it will not be ready for that June 2020 launch. In a few weeks Bridenstine’s review will come out, and it is likely going to show that a combination of private rockets can do the job, on time and for less money. Faced with further SLS delays, Bridenstine will likely have the political clout to enable him to make the switch, especially because he clearly intends to also continue his public and strong support for SLS for later launches. Such statements will act to placate these naysayers
Get that first Orion launch up using private rockets however and game will shift. It will then become very obvious that SLS is unneeded, and too expensive. While the corrupt political class in Washington will likely continue pouring taxpayer money into this black hole for years to come, the political winds will steadily begin shifting against it. And this shift will become even more evident should SpaceX succeed in getting its Starship/Super Heavy rocket operational in the next few years. At that point even Washington lawmakers will have to bow to reality and shut SLS down.
What will they then do? Don’t fool yourself. The pork and corruption will not cease, as long as these people remain in power. They will find a new boondoggle they can fund that will use these cheaper private rockets. Gateway immediately comes to mind. It won’t get us back to the Moon, but it will give lawmakers a big space project which will allow them to funnel money to their big old space contractors like Lockheed Martin and Boeing.
I wonder if part of this is Bridenstine trying to light a fire under Boeing and Marshall to get SLS flying sooner?
Doug Messier has a detailed description of what we hope will happen next month. Pretty clearly, the first stage will be sacrificed on its fourth (and final) flight.
Alan Ladwig reminded me this morning of a paper I wrote on the subject almost two decades ago (about a year and a half before I started blogging). It’s interesting to read it now and see how well (or poorly) it holds up. Few policy makers paid much attention to it at the time.