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Какой звук издает один импульс лазера? Чтобы узнать это, не нужно спрашивать дзен-мастера, просто послушайте первую акустическую запись лазерных импульсов на Марсе. В сол 12 с начала миссии (2 марта 2021 года) инструмент SuperCam на мачте марсохода Персеверанс 30 раз выстрелил лазером по валуну, названному Ма'аз, с расстояния в 3.1 метров. Оценка: 5.0 [голосов: 1]
Can you see the bat? It haunts this cosmic close-up of the eastern Veil Nebula. The Veil Nebula itself is a large supernova remnant, the expanding debris cloud from the death explosion of a massive star. Оценка: 5.0 [голосов: 1]
How many bright tails does Comet Lemmon have? Two. In the featured image it appears to have three, but why? The reason is that the zigzagging brown filament is a persistent meteor train that by luck appeared in front of the distant comet C/2025 A6 (Lemmon). Оценка: 5.0 [голосов: 1]
Halloween's origin is ancient and astronomical. Since the fifth century BC, Halloween has been celebrated as a cross-quarter day, a day halfway between an equinox (equal day / equal night) and a solstice (minimum day / maximum night in the northern hemisphere). Оценка: 5.0 [голосов: 1]
A mere 390 light-years away, Sun-like stars and future planetary systems are forming in the Rho Ophiuchi molecular cloud complex, the closest star-forming region to our fair planet. The James Webb Space Telescope's NIRCam peered into the nearby natal chaos to capture this infrared image at an inspiring scale. Оценка: 5.0 [голосов: 1]
A star forming region cataloged as NGC 2264, this beautiful but complex arrangement of interstellar gas and dust is about 2,700 light-years distant in the faint but fanciful constellation Monoceros, the Unicorn. Seen... Оценка: 5.0 [голосов: 1]
What are these little red dots (LRDs)? Nobody knows. Discovered only last year, hundreds of LRDs have now been found by the James Webb Space Telescope in the early universe. Although extremely faint, LRDs are now frequently identified in deep observations made for other purposes. Оценка: 5.0 [голосов: 1]
What's happening in the sky? Lightning. The most commonly seen type of lightning involves flashes of bright white light between clouds. Over the past 50 years, though, other types of upper-atmospheric lightning have been confirmed, including tentacled red sprites and ringed ELVES. Оценка: 5.0 [голосов: 1]
Yesterday the Sun reached its southernmost point in planet Earth's sky. Called a solstice, many cultures mark yesterday's date as a change of seasons -- from autumn to winter in Earth's Northern Hemisphere and from spring to summer in Earth's Southern Hemisphere. Оценка: 5.0 [голосов: 1]
Центр туманности Лагуна – водоворот эффектного звездообразования. Около середины картинки видны по крайней мере два облака в форме воронки, каждое длиной примерно в половину светового года, сформированные экстремальными звездными ветрами и мощным излучением звезд. Очень яркая близкая звезда – Гершель 36 – освещает эту область. Оценка: 5.0 [голосов: 1] |
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