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An illustration of the DART spacecraft approaching two asteroids.

In a first test of its planetary defense efforts, NASA’s going to shove an asteroid

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NASA is about to launch the first mission of its new planetary defense office. A spacecraft will attempt to knock a small asteroid off course by ramming into it.
Two giant whales under water near a raft.

The biggest whales can eat the equivalent of 80,000 Big Macs in one day

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Scientists have gotten the best estimates yet of exactly how much baleen whales, the largest animals on the planet, can consume in one day. Their caloric intake is mind-boggling.