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'Textbooks will need to be updated': Jupiter is smaller and flatter than we thought
Jupiter is smaller and flatter than scientists previously thought, new measurements of the gas giant reveal.
An ocean the size of the Arctic once covered half of Mars, new images hint
Mars may have been a "blue planet" with an ocean the size of today's Arctic Ocean, a new study suggests.
Strange discovery offers 'missing link' in planet formation
A decade of observations of four planets around the young planetary system V1298 Tau revealed a rare, long-sought missing link in planet formation.
NASA's Mars Sample Return is dead, leaving China to retrieve signs of life from the Red Planet
NASA's plans for Mars sample return are effectively cancelled as part of a bill approved by the U.S. Congress, ending efforts to collect Perseverance rover samples that could contain evidence of alien life.
Jupiter will outshine every star in the sky this weekend — how to see the 'king of planets' at opposition
Jupiter reaches opposition on Jan. 10, when it will shine all night at its brightest as Earth moves between the giant planet and the sun.
Uranus and Neptune may be 'rock giants,' not 'ice giants,' new model of their cores suggests
A new computational model suggests that Uranus' and Neptune's cores may be less icy than their "ice giant" nickname suggests.
NASA spacecraft takes milestone 100,000th image of Mars (photo)
NASA's Mars Reconnaissance Orbiter spacecraft has just taken its milestone 100,000th photo of the Red Planet using its high-definition camera. It reveals a dark region of moving sand dunes.
Why is Venus so bright?
The "morning star" is bright because of several factors, including having an atmosphere filled with sulfuric acid.
Spiders on Jupiter? Scientists uncover secret origins of arachnid-like 'demon' lurking on gas giant's moon.
A new study reveals the likely origin of a mysterious spider-like pattern first spotted on Jupiter's moon Europa in 1998. The finding could have implications for a NASA spacecraft en route to the frozen world.
