Budding Astronomer
Recently the International Space Station (ISS) has made a couple of good passes over Dunedin. Passes are not rare, however bright passes (-3 mag) combined with clear skies and balmy temperatures are. Notification of the pass made it into the local paper, so I was well warned of it. Viewing conditions were perfect, and about ten minutes before it passed over (10pm) I decided to wake Linus and take him into the back yard to see it.
Fortunately ten minutes was enough time for Linus to rub the sleepiness out of his eyes and then right on cue the ISS made its approach over the western horizon. Linus was fascinated, and as we watched it go over our heads he jumped off me to avoid losing sight of it. Satisfied, he went inside back to bed.
The next morning he was buzzing about it, asking lots of questions like ‘is a satellite like a rocket?’, ‘how come it wasn’t going very fast?’, ‘why did it look like a star?’ to which I did my best to deliver answers, showing him pictures of it on the Internet and explaining that even though we could see it it was as far away as Christchurch is from Dunedin (a sobering thought I might add!)
If you fancy spotting the ISS yourself, check out the Heavens Above website, and look for upcoming passes that are at least -1 in magnitude. Here’s some other facts about the ISS for you (or your kids):
- Crew: 6
- Continuously manned since November 2000
- Height: ~360km, Speed: ~28,000 km/hr
- Number of meals consumed onboard: 19,000



