Most asteroids lie in a vast ring between the orbits of Mars and Jupiter. This main asteroid belt holds more than 200 asteroids larger than 60 miles (100 kilometers) in diameter.hey are also known as planetoids or minor planets. In total, the mass of all the asteroids is less than that of Earth's moon. But despite their size, asteroids can be dangerous. Many have hit Earth in the past, and more will crash into our planet in the future.
Heathrow Express. Heathrow Express is an airport rail link between London Heathrow Airport and Paddington. It opened in 1998 and is operated by the Heathrow Express Operating Company, a wholly owned subsidiary of Heathrow Airport Holdings. It is an open access operator and not subject to franchising.
For Terminal 5, get on the London-Heathrow train at Paddington and stay on board at Heathrow Terminal 2 & 3 â all trains continue to Terminal 5, arriving 6 minutes later. For Terminal 4, change at Heathrow Terminal 2 and 3 and catch the free transfer service. From Monday to Thursday Heathrow Express will run half hourly after the 21:55 service. Services start at 22:25 until 23:25. ** First train departs 06:25 on Sunday, then every 15 minutes until 23:25. *** Please note, a change is required at Heathrow Terminals 2 & 3 to connect to the free Terminal 4 transfer service.