‘The US Air Force’s secretive X-37B spaceplane landed yesterday after 718 days in orbit—just twelve days shy of a full two years. What was it doing up there in the sky? The government won’t say. Even the spaceplane’s budget is a secret. But the X-37B’s landing wasn’t so stealth. The spaceplane caused a sonic boomthat woke up people living near NASA’s Kennedy Space Center in Florida.
The secret, reusable spaceplane is made by Boeing and is unmanned, allowing it to conduct extended missions, even if the public has no idea what those missions might be. This was the X-37B’s fourth mission (all secret, of course) and the spaceplane typically lands in California, not Florida. Again, we don’t know enough about the spaceplane’s purpose to speculate about why it landed in Florida and woke up the neighbors this time around…’