Neptune's moon and ring system stand out among the giant planets because of the strange imbalance between its one very large moon and its many tiny moons. Its largest moon, Triton, makes up more than 99% of the mass of all ...
A new paper published in Physical Review Letters reveals that a leading dark matter candidate—the hypothetical "dark photon"—would not have heated the early universe as previously thought. The finding opens a vast region ...
Astronomy
18 hours ago
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NASA is planning to send three small rovers to the moon with a single instruction: Work out among yourselves how to explore a patch of ground.
Space Exploration
16 hours ago
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