木星与土星大近合：电影

木星与土星大近合：电影

ByNASA中文

2020年12月30日 Jupiter and Saturn Great Conjunction: The Movie Video Credit: Thanakrit Santikunaporn (National Astronomical Research Institute of Thailand); Text: Matipon Tangmatitham Explanation: Yes, but have you seen a movie of Jupiter and Saturn’s Great Conjunction? The featured time-lapse video was composed from a series of images taken from Thailand and shows the two giant planets as they angularly passed about a tenth of a degree from each other. The first Great Conjunction sequence shows a relative close up over five days with moons and cloud bands easily visible, followed by a second video sequence, zoomed out, over 9 days. Even though Jupiter and Saturn appeared to pass unusually close together on the sky on December 21, 2020, in actuality they were still nearly a billion…

木星─土星大近合：有大红斑参与的盛会

木星─土星大近合：有大红斑参与的盛会

ByNASA中文

2020年12月23日 Jupiter Meets Saturn: A Red Spotted Great Conjunction Image Credit & Copyright: Damian Peach Explanation: It was time for their close-up. Two days ago Jupiter and Saturn passed a tenth of a degree from each other in what is known a Great Conjunction. Although the two planets pass each other on the sky every 20 years, this was the closest pass in nearly four centuries. Taken early in day of the Great Conjunction, the featured multiple-exposure combination captures not only both giant planets in a single frame, but also Jupiter’s four largest moons (left to right) Callisto, Ganymede, Io, and Europa — and Saturn’s largest moon Titan. If you look very closely, the clear Chilescope image even captures Jupiter’s Great Red Spot. The now-separating…

火山上空的大近合

火山上空的大近合

ByNASA中文

2020年12月20日 A Volcanic Great Conjunction Image Credit & Copyright: Francisco Sojuel Explanation: Where can I see the Great Conjunction? Near where the Sun just set. Directionally, this close passing of Jupiter and Saturn will be toward the southwest. Since the planetary pair, the Sun, and the Earth are nearly in a geometric straight line, the planets will be seen to set just where the Sun had set — from every location on Earth. When can I see the Great Conjunction? Just after sunset. Since the two planets are so near the Sun directionally, they always appear in the sky near the Sun, but can best be seen when the Earth blocks the Sun but not the planets: sunset. Soon thereafter, Jupiter and Saturn will also…

土星与木星大近合

土星与木星大近合

ByNASA中文

2020年12月15日 Great Conjunction: Saturn and Jupiter Converge Illustration Credit & Copyright: Sebastian Voltmer Explanation: It’s happening. Saturn and Jupiter are moving closer and will soon appear in almost exactly the same direction. Coincidentally, on the night of the December solstice — the longest night of the year in the north and the longest day in the south — the long-awaited Great Conjunction will occur. Then, about six days from now, Saturn and Jupiter will be right next to each other — as they are every 20 years. But this juxtaposition is not just any Great Conjunction — it will be the closest since 1623 because the two planetary giants will pass only 1/10th of a degree from each other — well less than the apparent…

西西里灯塔上空的天体大近合

西西里灯塔上空的天体大近合

ByNASA中文

2020年12月08日 Great Conjunction over Sicilian Lighthouse Image Credit & Copyright: Kevin Saragozza Explanation: Don’t miss the coming great conjunction. In just under two weeks, the two largest planets in our Solar System will angularly pass so close together in Earth’s sky that the Moon would easily be able to cover them both simultaneously. This pending planetary passage — on December 21 — will be the closest since 1623. Jupiter and Saturn will remain noticeably bright and can already be seen together toward the southwest just after sunset. Soon after dusk is the best time to see them — because they set below the horizon soon after. In mid-November, the Jovian giants were imaged together here about three degrees apart — and slowly closing. The featured…