Hereâs how long the iOS 8.1 upgrade takes. You should make sure you start the iOS 8.1 download on a good internet connection, when you have time to wait for the download to complete. You need WiFi to start this and you need at least 50% battery life.
On average the moon is 380,000 km (235,000 miles) from the Earth, a distance of about 110 times its own diameter. A tennis ball would then have to be 110 x 6.7 cm = 7.37 meters (about 24 feet) from the basketball.
The Earth-Moon L2 point is about 33,000 miles (60,000 km) beyond the far side of the Moon. Adding this to the average distance from the Earth to the Moon of about 239,000 miles gives a total distance of about 272,000 miles from Earth to the Earth-Moon Lagrange L2 point.