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This Week’s Sky at a Glance, October 9 – 17

Mars comes to opposition on October 13th. Although it was closest to Earth on the 6th, it is still at virtually the same distance all week, remaining 22.5 to 22.0 arcseconds in apparent diameter. This is bigger than we will see it again until September 2035.

And Mars climbs into good view a little earlier every night! In late dusk it glares fiery orange, more than Jupiter-bright, low in the east. It’s nice and high in the southeast by 10 or 11 p.m. daylight-saving time. It’s its highest and at its telescopic best by midnight or 1 a.m., blazing high in the south.

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