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have, interest, astronomy, exist, arrive, inform

At the end of 2011, 1____ working for NASA, the National Aeronautics and Space Administration, had some exciting news to tell the world. Newspaper journalists and television reporters were soon writing about the new discovery-an Earth-like planet called Kepler 22b. It is really 2____ because of the distance between the planet and its sun. Scientists think that it might have a similar temperature to ours. It could also have oceans and, therefore, life but at the moment, it is impossible to get very accurate 3____ about the planet as it is so far away. One reason why people are so interested in other planets is that the future of the Earth is uncertain. If we 4_____ to leave our planet because of pollution or war, it would be nice to have somewhere else to go. So, could we get to Kepler 22b? At the moment, it seems unlikely. The planet is about 600 light years away. The fastest spacecraft ever invented is the Helios 2, which reached a speed of 240,000 kilometres an hour. If we travelled in that, we 5____ on Kepler 22b in about two and a half million years!​