It was only a test. Astronomers report on the TC4 Observation Campaign, which, in October, used a real Near-Earth Asteroid to practice our global response to a potential asteroid threat.
One half of the W of Cassiopeia is more deeply notched than the other half. This deeper V is your "arrow" in the sky, pointing to the Andromeda galaxy.
Here's how astronaut Scott Kelly saw Jupiter and Venus (brighter) - above Earth's limb - in 2015, while serving aboard the International Space Station.
