SORABUMI

#Jupiter

Content tagged "Jupiter".

6 items (6 articles, 0 stories)

Articles

Four Lights by Jupiter Kept Rearranging Every Night — and Ended an Earth-Centered Universe

In the winter of 1610, Galileo spotted four tiny points of light next to Jupiter, and their arrangement kept shifting from one night to the next. It was the first evidence that something other than Earth could have objects orbiting it, and a few weeks of notes toppled a 2,000-year-old assumption about the shape of the universe. You can still see those same four points next to Jupiter through a pair of binoculars.

Stories of Space Exploration #Jupiter#Galileo#Galilean moons#history of astronomy

Giant Planets Spin Faster Than 'Failed Stars' — A Surprising Mass-Spin Reversal

Keck Observatory's KPIC instrument measured the spin of giant gas planets and brown dwarfs ('failed stars') using spectroscopy. In the HR 8799 system, the brown dwarf — more than three times heavier — rotates about six times slower than its lighter planetary neighbor. The likely culprit: a newborn planet's magnetic field braking against its birth disk, offering a new way to tell planets and stars apart.

Searching for Another Earth #exoplanets#brown dwarfs#Jupiter#rotation

No Brand-New Telescope Can Reshoot Jupiter's Storms From Ten Years Ago

Launch the best telescope in the world today, and you still can't photograph Jupiter as it looked a decade ago. Hubble, working since 1990, caught something no new instrument ever could: the outer winds of the Great Red Spot speeding up by as much as 8% between 2009 and 2020. SORABUMI explains why a telescope's worth isn't measured by how new it is, but by how long it has been watching.

Stories of Space Exploration #space telescopes#Hubble#Jupiter#long-term observation#NASA
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