Could the Hubble Telescope see footprints on the moon?
Could the Hubble space telescope see the footprints made by the Apollo astronauts on the moon’s surface?
Dave Ansell took a look at this question...
Dave - Well, Hubble is an incredible telescope but, looking up its resolution, I reckon it has a resolution of 0.05 arcseconds: that means it can distinguish two objects which are 0.000013 degrees apart; any closer together than that and they merge into one object.
Chris - In practical terms, what does that mean?
Dave - That means if something - the distance of the moon away from us...
Chris - So about a quarter of a million miles to the moon?
Dave - Yes, about 384,000 kilometres - that means you can see something 9 to 10 metres across on the moon, so probably not.
Chris - That would be a very big footprint - Bigfoot literally. Okay, thank you Dave!