An open cluster duo

Mark Germani from Vancouver, British Columbia, Canada M35 and NGC 2158 are two open star clusters that appear next to each other in Gemini. M35 is the larger and closer of the two at a distance of 3,000 light-years; NGC 2158 is older and lies five times farther away. The imager took 2.4 hours ofContinue reading “An open cluster duo”
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