As is often the case, when it’s the end of the month and I don’t have anything in particular to write about, I write about spaceships.
- The cause of the SpaceX rocket explosion has been announced as a strut that snapped due to a manufacturing defect. It doesn’t sound like there is 100% confidence that’s actually what happened, but if it was the cause then it’s a relatively easy fix and one that will lead to a more reliable vehicle. Future launches aren’t expected to be postponed more than a few months while the issue is addressed.
- NASA’s giant new rocket, creatively named the “Space Launch System (SLS)”, has had several successful engine tests and is scheduled for first flight in 2018. It would be the most powerful rocket ever launched, but is unfortunately a machine without a clear purpose – there are no imminent plans to send people to Mars or the moon, and with a price tag of at least $500 million per launch (and up to $5 billion by some critical estimates) it is far more expensive than any other option for satellite launches or space station resupply missions.
- The New Horizons spacecraft just zoomed by Pluto, providing some surprising information about a dwarf planet that is about 40 times further away from the sun than the Earth is. This plucky little spacecraft was initially cancelled in 2000, but a large backlash revived its funding, and it spent nearly a decade after its 2006 launch reaching the edge of the solar system. Its useful life is expected to be 15 years, meaning there should be plenty of science to come as it travels through the Kuiper Belt.
Last of all, for anyone not quite clear on how far away Pluto really is, here’s a model of the solar system that has been scaled so that the moon is the size of a single pixel. Spoiler alert: Pluto is FAR away.