2小时30分钟期间的木星

2小时30分钟期间的木星

BySamuel Chan

2024年1月19日 Jupiter over 2 Hours and 30 Minutes Image Credit & License: Aurélien Genin Explanation: Jupiter, our Solar System’s ruling gas giant, is also the fastest spinning planet, rotating once in less than 10 hours. The gas giant doesn’t rotate like a solid body though. A day on Jupiter is about 9 hours and 56 minutes long at the poles, decreasing to 9 hours and 50 minutes near the equator. The giant planet’s fast rotation creates strong jet streams, separating its clouds into planet girdling bands of dark belts and bright zones. You can easily follow Jupiter’s rapid rotation in this sharp sequence of images from the night of January 15, all taken with a camera and small telescope outside of Paris, France. Located just…

木星与双子流星

木星与双子流星

BySamuel Chan

2023年12月28日 Jupiter and the Geminid Image Credit & Copyright: Gaurav Singh Explanation: For a brief moment, this brilliant fireball meteor outshone Jupiter in planet Earth’s night. The serendipitous image was captured while hunting meteors under cold Canadian skies with a camera in timelapse mode on December 14, near the peak of the Geminid meteor shower. The Geminid meteor shower, asteroid 3200 Phaethon’s annual gift, always arrives in December. Dust shed along the orbit of the mysterious asteroid causes the meteor streaks, as the vaporizing grains plow through our fair planet’s upper atmosphere at 22 kilometers per second. Of course Geminid shower meteors appear to radiate from a point in the constellation of the Twins. That’s below and left of this frame. With bright Jupiter on…

朱诺号影像: 木卫三

朱诺号影像: 木卫三

ByNASA中文

2023年11月28日 Ganymede from Juno Image Credit & Copyright: NASA/JPL-Caltech/SwRI/MSSS; Processing & License: Kevin M. Gill; Explanation: What does the largest moon in the Solar System look like? Jupiter‘s moon Ganymede, larger than even Mercury and Pluto, has an icy surface speckled with bright young craters overlying a mixture of older, darker, more cratered terrain laced with grooves and ridges. The cause of the grooved terrain remains a topic of research, with a leading hypothesis relating it to shifting ice plates. Ganymede is thought to have an ocean layer that contains more water than Earth — and might contain life. Like Earth’s Moon, Ganymede keeps the same face towards its central planet, in this case Jupiter. The featured image was captured in 2021 by NASA’s robotic…

冲点附近的立体木星

冲点附近的立体木星

ByNASA中文

2023年11月24日 Stereo Jupiter near Opposition Image Credit & Copyright: Marco Lorenzi Explanation: Jupiter looks sharp in these two rooftop telescope images. Both were captured on November 17 from Singapore, planet Earth, about two weeks after Jupiter’s 2023 opposition. Climbing high in midnight skies the giant planet was a mere 33.4 light-minutes from Singapore. That’s about 4 astronomical units away. Jupiter’s planet girdling dark belts and light zones are visible in remarkable detail, along with the giant world’s whitish oval vortices. Its signature Great Red Spot is still prominent in the south. Jupiter rotates rapidly on its axis once every 10 hours. So, based on video frames taken only 15 minutes apart, these images form a stereo pair. Look at the center of the pair and…