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.
The Heathrow Express is the fastest way to travel into Central London. Trains from Heathrow leave every 15 minutes and the journey to London Paddington takes about 15-20 minutes.Trains to London leave Heathrow Airport from approximately 5am until 11.55pm.Standard adult fares are Â£21.50 for a single ticket purchased online or at a ticket office/machine (or Â£26.50 when purchased onboard).he journey time to Piccadilly Circus is about 50 minutes. There are three Tube stations at Heathrow Airport, serving Terminals 1-3, Terminal 4 and Terminal 5. A single paper ticket from Heathrow (Zone 6) into Central London (Zone 1) costs Â£5.70.