[deep tokyo]









On the planet-watching side, it's been overcast all weekend, to a point where I doubt even the Moon, if on this side of the planet, would be visible. This evening, however, things cleared up, and my attempts were met with success.
I got up on the roof at around 21:30 (I know it sounds theatrical, but it's a necessity to see past the neighbouring houses and get a clear line of sight to the lower western horizon), and I didn't have to look for very long. Jupiter, high to the left in the western sky showed up as a bright dot, soon followed by Venus, down and right, closer to the horizon. Then came Saturn, and Mars (although faint), and the three of them formed a small, almost equilateral triangle.
Below the triangle is another bright spot, looking deceptively much like a planet. It is in fact the star Aldebaran. About 60 light-years away and 40 times the size of the Sun, it's brightest star of the Taurus constellation, and said to make up the Bull's eye.
With the help of binoculars, I could also catch a glimpse of Mercury to the lower right of the triangle, fast-sinking and hard to see clearly against the still semi-bright lower western sky.

So, the inner solar system reaches 227 million kilometers - or 12.6 light-minutes - from the Sun to Mars. And from there distances grow quickly - at more than three times that, 43.3 light-minutes, lies Jupiter. The most faraway planet visible to the naked eye from here is Saturn at around 79 light-minutes, almost twice as far as Jupiter from the Sun (and once you've gone from the Sun to Saturn, it's more than twice as far again until you reach Uranus* - the planets might be big, but not compared to the distances separating them).
These are our neighbours in space, and from an only slightly larger point of view, they are our direct backyard, our very doorstep. Watch them group up while you can, because forecasts say, the next comparable meeting is due in 2040.

Also, the every-day window from one location isn't very large. From when the sky gets dark enough for the planets to be visible (about one hour after sunset), you have around another hour to watch them until they set below the horizon.

As for right now, it's getting late. I'm thinking it's time to take a shower, and be off to bed.
Be well.




*A lot of people have fun with this. Try to get it right, "YOOR-ah-nus", rather than "your anus" or "urine us".
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