At the time of its launch in 1990, the Hubble Space Telescope had cost $1.5 billion to develop and construct. Additional costs were incurred to service the Hubble, the first space-based telescope, once it was placed in low Earth orbit.
The shape of our galaxy, the Milky Way, is a spiral. A bulge of older stars exists at the center of the spiral and the arms of the spiral contain newer stars. A black hole possibly exists in the very center of the Milky Way.
Meteors falling through the atmosphere, called shooting stars, occur regularly and are seen on any clear night every 10 to 15 minutes. Shooting stars occur reliably and in large numbers during the meteor showers that occur yearly based on the passage of particular comets or minor planets close to Earth.