Jupiter | Astronomy.com

A monochrome engraving depicts a person seated on a stool with their back turned, operating a large cone-shaped instrument pointing toward an open window in the background. The room is filled with scientific tools, including a tall wooden clock cabinet on the left wall, pendulums, and various instruments spread across the floor. Detailed cross-hatching creates high contrast, casting deep shadows across the dark interior while bright light streams in through the window pane.

Today in the History of Astronomy

Sept. 25, 1644: The birth of Ole Roemer

A small, blurry, strawberry-shaped blob glowing in warm orange and red tones sits centered within a dark square inset. Two faint, yellowish points of brightness stand out along its right edge, contrasting against the muted red body. The entire square frame is isolated against a solid black background, giving the object high contrast.

Today in the History of Astronomy

Sept. 9, 1892: Edward Emerson Barnard sees Amalthea

A digital illustration shows a large, tan- and cream-banded planet on the left and a dark spacecraft with a prominent white dish antenna positioned to its right. Long, thin booms and antennas extend from the spacecraft, crossing in front of the planet and out toward the sides of the frame where several small, textured moons are scattered. The entire scene is set against a dark background dense with countless tiny, faint stars.

Robotic Spaceflight, Today in the History of Astronomy

July 9, 1979: Voyager 2’s Jupiter visit

A color image shows a large sphere with orange, brown, and cream-colored horizontal bands positioned in the upper portion of the frame against a solid black background. A small, distinct black circle sits on the upper left side of the banded sphere's surface. Extending downward from beneath the planet toward the bottom right is a long, diagonal trail of small, glowing white fragments that look like a broken line of light.

Today in the History of Astronomy

July 8, 1992: Comet Shoemaker-Levy 9 breaks up

An artistic color painting depicts a metallic spacecraft with a large, grey dish antenna and golden instruments floating in deep space. A very long, thin boom extends from the spacecraft toward the upper left into a dark, textured void speckled with white stars. In the background, the massive curve of a planet glows with thick, swirling bands of orange, yellow, and brown under bright illumination.

Today in the History of Astronomy

Jan. 23, 2003: Pioneer 10’s last words

Today in the History of Astronomy

Dec. 30, 2000: Cassini flies past Jupiter

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Robotic Spaceflight

The JUICE mission just pulled off an unprecedented spaceflight maneuver