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missile defense system

ROCKET BLOCKER  The United States’ ground-based missile defense system, shown here in a test conducted at Vandenberg Air Force Base in California, aims to protect the U.S. from ballistic missiles.

La Corona

MAYA HUB  An ancient Maya site called La Corona (shown in this artist’s illustration with a ceremonial center in the foreground) was a remote but key part of a large Classic Maya state, new research suggests.

laser and exoplanet

UNDER PRESSURE  Using lasers, scientists compressed iron to high pressures that are likely found in large, rocky exoplanets’ cores. Here, an image of inside the laser chamber is shown with an artist’s rendering of an exoplanet.

Tropical Storm Harvey

MATH GETS REAL  Chaos theory explains why it’s so difficult to predict weather — a small change in conditions at any point in time can have a large effect on future conditions in, for example, a hurricane’s trajectory (Tropical Storm Harvey shown).



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