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Kirill Lestberg

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Какая температура на Марсе?

Марс удален от Солнца на большее расстояние, чем Земля, а его углекислая атмосфера в 100 раз тоньше, чем у нашей планеты, из-за чего не может служить одеялом, сохраняющим тепло. По этим причинам на Марсе холодно. Минимальная температура, которую там регистрировали, составляет минус 128 °С, а на Земле — минус 93 °С в Антарктиде. Марсианский температурный максимум равен +30 °С, а земной составляет +56 °С в Долине Смерти, США. Средняя температура на Марсе, по данным НАСА, — минус 60 °С. Зимой ближе к полюсам может доходить до минус 125 °С. Летним днем у экватора воздух нагревается до +20 °С, однако в ночное время может похолодать до минус 73 °С. По ночам на поверхности появляется изморозь, которая с рассветом превращается в пар, увеличивая влажность воздуха. Температурный максимум, зафиксированный марсоходом «Кьюриоисти», составляет +6 °С после полудня, при этом значительное число дней за период его наблюдений температура была выше нуля. Марсоход «Персеверанс» 29 января зафиксировал максимальную температуру — минус 13 °С и минимальную — минус 85 °С. Времен года четыре, как и у нас. Но они отличаются по продолжительности из-за того, что орбита Марса более вытянутая. Так, марсианская весна в северном полушарии длится 7 месяцев, на летний и осенний сезоны приходится около 6 месяцев, а продолжительность зимы составляет 4 месяца. Во время марсианского лета происходит таяние полярной ледяной шапки, а зимой она снова разрастается. По одной из версий, когда-то на Марсе было более тепло и влажно, а средняя температура достигала +10 °С. По другим данным, из-за того, что Солнце раньше было тусклее, Красная планета представляла собой белоснежную ледяную пустыню. Климатические изменения на Марсе происходят и сейчас. Исследования показали признаки перехода от ледникового периода к межледниковому, что выражается в сокращении полярных ледяных шапок и увеличении среднеширотных ледников.

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10 February 2022

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Kirill Lestberg

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Другие записи

Bergara B-14

When this rifle made a splash in America, gun-counter savants were wont to call it “the rifle the Remington 700 should have been.” Blasphemous though that may be to Remington disciples, the fact is the B-14 is an exceptional rifle and has garnered several national awards. Patterned much like the M700, it has a better extractor and bolt release. Manufactured in Bergara, Spain, the B-14 has quickly garnered a reputation for superb accuracy, thanks to the unrelenting quality of Bergara barrels. This reputation is supported by a sub-MOA accuracy guarantee. Versions range from true mountain rifles to heavy, configurable PRS competition guns. There’s even a B-14 R rimfire PRS-type training rifle. The $865 B-14 Ridge model shown here won the NRA Golden Bullseye Best Rifle award in 2018. It has a threaded muzzle, a composite stock with soft-touch finish, and integral epoxy-pillar bedding. It’s an excellent all-around hunting rifle that won’t let you down..

Bergara B-14 When this rifle made a splash in America, gun-counter savants were wont to call it “the rifle the Remington 700 should have been.” Blasphemous though that may be to Remington disciples, the fact is the B-14 is an exceptional rifle and has garnered several national awards. Patterned much like the M700, it has a better extractor and bolt release. Manufactured in Bergara, Spain, the B-14 has quickly garnered a reputation for superb accuracy, thanks to the unrelenting quality of Bergara barrels. This reputation is supported by a sub-MOA accuracy guarantee. Versions range from true mountain rifles to heavy, configurable PRS competition guns. There’s even a B-14 R rimfire PRS-type training rifle. The $865 B-14 Ridge model shown here won the NRA Golden Bullseye Best Rifle award in 2018. It has a threaded muzzle, a composite stock with soft-touch finish, and integral epoxy-pillar bedding. It’s an excellent all-around hunting rifle that won’t let you down..

Post: 11 October 2024

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Ruger Mini-14

The Mini-14 has been around since 1973 and was developed with the help of James Sullivan of AR-15 fame. The Mini-14 is a scaled-down version of the M-1 Garand action and feeds from a detachable box magazine. These rifles are lightweight at just over six pounds, compact, handy and reliable. More recent examples are more accurate than their predecessors and offer additional features such as scope mounts. The Mini-14 has seen worldwide use by security forces and remains one of my favorite truck guns here at home..

#RugerMini14 #Mini14Rifle #RugerFirearms #HuntingRifles #HuntingWithRuger #CompactRifles

Ruger Mini-14 The Mini-14 has been around since 1973 and was developed with the help of James Sullivan of AR-15 fame. The Mini-14 is a scaled-down version of the M-1 Garand action and feeds from a detachable box magazine. These rifles are lightweight at just over six pounds, compact, handy and reliable. More recent examples are more accurate than their predecessors and offer additional features such as scope mounts. The Mini-14 has seen worldwide use by security forces and remains one of my favorite truck guns here at home.. #RugerMini14 #Mini14Rifle #RugerFirearms #HuntingRifles #HuntingWithRuger #CompactRifles

Post: 7 October 2024

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Henry Rimfire Lever Action

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Henry Rimfire Lever Action It can be a challenge to find products made entirely in the U.S. these days but Henry prides itself in that fact. Among its wide variety of lever-action rifles, the rimfire models stand out. These are guns for the entire family that can be used to teach safe and responsible use as well as put meat on the table. Over 1 million Henry .22s have been sold, which is a testament to their quality and reputation. Lever-action Henrys feed from a tubular magazine and are built with traditional walnut and blued steel. Light, handy and capable, this is a rifle that should probably be in everyone’s collection.

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Remington Model Seven When I worked behind a gun counter, probably I sold more Model Sevens than all of my colleagues combined. The Model Seven is essentially a shortened 700 action that maintains virtually all of its virtues. These little rifles prove that you don’t need a magnum-length barrel to have an effective hunting rifle. Compact, relatively light and portable, these rifles are just the ticket for hunting from tree stands, in timber or in thick brush. Though Model Sevens were chambered in everything from the 17 Remington to the 300 SAUM over the years, examples in .260, 6.5 Creedmoor and 7mm-08 are my personal favorites, particularly for whitetails..

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Blaser R93

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Blaser R93 This is an unconventional design that could only come from Germany. The Blaser’s straight-pull bolt action is a marvel of Teutonic engineering, designed for extremely rapid shooting on driven game. The beauty of this rifle, though, is its versatility. Simply by swapping a few components, the R93 can be chambered for any cartridge ranging from .22 LR to .500 Jeffrey. A small take-down case can house the rifle along with an extra barrel or two, creating an incredibly versatile and convenient package for the international hunter. The R93 was replaced with the newer R8 a few years back, but remains a favorite for many.

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