Planetary Science
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Planetary ScienceJupiter has 12 more moons than we knew about — and one is bizarre
Astronomers found a dozen previously unknown moons of Jupiter, and one may be a remnant of a larger moon that was all but ground to dust.
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Planetary ScienceFirst global maps of Pluto and Charon show the worlds’ highs and lows
New charts of Pluto and its moon Charon, compiled using New Horizons’ data, reveal high peaks, deep depressions and strange ridges.
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AstronomyAstronomers snap the first baby pictures of a planet
New telescope images give the clearest view of an exoplanet embryo yet.
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AstronomyJapan’s Hayabusa2 spacecraft arrives at the asteroid Ryugu
The Hayabusa2 spacecraft says “hello” to near-Earth asteroid Ryugu.
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Planetary ScienceMars got its crust quickly
The Martian crust had solidified within 20 million years of the solar system’s formation.
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AstronomyOn Jupiter, lightning flashes from storms swirling at the poles
After almost 40 years, scientists have discovered that Jupiter has lightning that is similar to lightning on Earth — it just happens in a different place.
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Planetary ScienceVenus’ thick atmosphere speeds up the planet’s spin
Venus’ thick atmosphere can push on mountains on the surface, changing its rotation period by a few minutes every day.
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Planetary ScienceThe Mars rover Opportunity is sleeping, not dead, NASA says
Opportunity is hunkered down in a deep sleep on Mars to ride out what’s looking to be a long dark dust storm.
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Planetary ScienceOpportunity rover waits out a huge dust storm on Mars
NASA’s Opportunity rover is in low-power mode to preserve battery life while a vast dust storm blankets part of the Red Planet.
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Planetary ScienceCuriosity finds that Mars’ methane changes with the seasons
The Curiosity rover found seasonally changing methane in Mars’ atmosphere and more signs of organic molecules in an ancient lake bed.
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Planetary ScienceNew Horizons wakes up to begin Kuiper Belt exploration
The New Horizons spacecraft just woke up to get ready for its New Year’s Day flyby of the distant space rock Ultima Thule.
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Planetary ScienceNever-before-seen dunes on Pluto spotted in New Horizons images
Images from the New Horizons spacecraft reveal dunes on Pluto — but the sand-sized grains must have had an unusual boost to get moving.