If you're an armchair astronomer, or you have your own telescope and are planning a bit of stargazing tonight, then how about popping along to the Royal Observatory's Planetarium for their 'Sky Tonight' show.
This daily show will give you a fantastic tour of the heavens, so you'll know exactly what you're looking at if you aim your gaze skywards tonight.
As well as pointing out all the obvious objects like the moon and the planets, and which constellations are visible this time of year, it will also reveal whether you'll get lucky with a shooting star or comet.
Craig has never been to this actual planetarium show, but he has written a review of the Royal Observatory on his blog, which includes a review of different planetarium show. It's quite fantastic inside. You sit down in a reclining seat and the dome is dimmed down until it's pitch black (you can't even see your hand in front of your face), then they turn up the stars and the entire ceiling twinkles with them. It's a 360 degree view -- like you're sitting inside an upturned tea-cup. It really is quite spectacular!
Whilst you're going to be visiting the Royal Observatory then you might like to spend the rest of the day at the National Maritime Museum and Old Royal Naval College, which are both at the bottom of Greenwich Hill. And there really is only one way to get to Greenwich. Don't go by train. Don't go by bus. If you really want an enjoyable day then catch one of the TRS boats from Big Ben to Greenwich, which sails into Greenwich Pier by the tall mast of the Cutty Sark.
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