GEM
发表于 2025-3-23 13:17:29
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gangrene
发表于 2025-3-23 17:38:27
Cones, Projections, and More About ProductsSpring is a wonderful time of the year for backyard astronomers. No longer is it necessary to bundle up and wear layer upon layer of clothing to resist the wintry chill. Warm gloves and stocking caps can be packed away for 6 or 7 months. And the heat, humidity, and the insects of summer is still 3 months away.
correspondent
发表于 2025-3-23 18:11:48
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conifer
发表于 2025-3-23 22:53:45
Class field theory and algebraic K-theory,As backyard astronomers, the warm humidity of summer observing gives way to the cooling air of autumn. Slowly, the observing wardrobe of shorts and t-shirts evolves to long pants and long sleeves to light jackets and eventually heavier coats.
gastritis
发表于 2025-3-24 04:12:17
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处理
发表于 2025-3-24 07:32:58
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blithe
发表于 2025-3-24 11:15:07
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infantile
发表于 2025-3-24 16:07:38
Grassmannians and Related Varietiesayload. Shuttle mission STS-31, with Commander Loren J. Shriver, Pilot and future NASA Administrator Charles F. Bolden Jr., and Mission Specialists Steven A. Hawley, Bruce McCandless II, and Kathryn D. Sullivan, was assigned the primary mission of deploying the Hubble Space Telescope into a 380 mile orbit above the Earth.
figure
发表于 2025-3-24 19:45:36
Cones, Projections, and More About Productsckyard observer. Equipped with the right visual aid, in the form of a telescope or occasionally binoculars, the backyard observer will be able to locate and observe some of the brighter targets of Hubble interest. The reader is reminded that what can be seen from the backyard will not be Hubble-quality in detail, resolution, or image size.
crease
发表于 2025-3-25 01:09:00
Class field theory and algebraic K-theory, up the legs or flying and buzzing around the head. The trees have lost their leaves and allow more sky to be seen. And rising from his summertime slumber, Orion rises above the horizon to welcome the astronomers to another wintry observing night.