Wobbling exoplanet hints at a hidden exomoon so massive it could redefine the word 'moon' altogether
"In our solar system, the most massive moon is Ganymede, which is still extremely small compared to what we are inferring here." ...
Looking for a sky event this week? Check out our full Sky This Week column. January 20: Comet Schaumasse slides by some ...
Looking for a sky event this week? Check out our full Sky This Week column. January 21: Ganymede and its shadow transit ...
Astronomy on MSN
The Sky This Week from January 16 to 23: Caroline's Rose blooms
Sky This Week is brought to you in part by Celestron. Friday, January 9Cygnus may be sinking toward the horizon a few hours ...
With the Moon at new early in the week, January delivers some of the darkest evening skies of the season — ideal ...
Space.com on MSN
New moon of January 2026 brings prime views of Jupiter, Saturn and winter stars tonight
With the moon out of the way on Jan. 18, bright Jupiter and Saturn become stand-outs in the January night sky.
While Io, the most volcanically active moon in the solar system, appears completely dry and devoid of water ice, its neighbor ...
On Earth, deep-sea vents may have given rise to the planet’s first life. But nothing of the sort seems to be happening at the ...
The giant planet Jupiter is back in our evening sky this week. Fresh from its opposition with the sun on Jan. 10, it now lies as close to the Earth as it ...
What Yang Liwei heard during China’s first crewed spaceflight still defies physics, sensors, and every known explanation.
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