content_M1363224501R.Jupiter_Saturn.v2

Edited Lunar Reconnaissance Orbiter image of the conjunction between Jupiter (lower center) and Saturn (upper center) on 22 December 2020. Despite how close they look here, they were still pretty far apart. Saturn is much dimmer than Jupiter so NASA increased the brightness of Saturn to make it visible. This image was taken from Lunar orbit.

Image source: lroc.sese.asu.edu/posts/1174

Original caption: A planetary conjunction is when two objects in the sky appear close to each other from our viewpoint here on planet Earth. The easiest way to picture the Jupiter–Saturn conjunction is to imagine a straight line drawn between the Earth, Jupiter and Saturn. To the naked eye, despite the great distances between the two planets, they appear to nearly touch (or even to touch, depending on the blurriness of your vision). The LROC NAC captured this view just a few hours after the point of closest separation (0.1°) between the two giant planets. With the sharp focus of the NAC, you can see that the two planets are actually separated by about 10 Jupiter diameters.

The constant motion of the planets means that the moment that Jupiter and Saturn appear closest is fleeting; a day later (22 December) you can look up and see the two planets already appear farther apart. Due to the varying time that each planet takes to orbit the Sun, the alignment of Jupiter and Saturn only happens about every twenty years, and a conjunction this close is even rarer – the two planets will not appear this close (0.1° separation) again until March of 2080.

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Taken on: December 26, 2020

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26 December 2020

22 December 2020

Lunar Orbit

Jupiter

Saturn

Conjunction

Planet

Topical

Rings

content_M1363224501R.Jupiter_Saturn.v2

PR Image « less

Sets appears in: • Edited • Grayscale more » • U.S. Government • Lunar Reconnaissance Orbiter • Astronomy Pictures • Planet • PR Images • Saturn • Jupiter • Topical • NASA « less

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