NASA's TESS mission spots Earth-size exoplanet
NASA's planet-hunting TESS mission has found its first Earth-size exoplanet in a star system only 53 light-years from Earth. Another exoplanet, a warm mini-Neptune, was found in the same system.
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New satellite images suggest Russia military buildup
New satellite imagery shared exclusively with CNN shows Russia appearing to upgrade four of its military installations in Kaliningrad, Russia's strategic outpost on NATO's doorstep.
Suspect fatally shot in Brussels Central Station terror attack
A suspect was fatally shot at Brussels Central Station Tuesday after a failed bombing that Belgian authorities are calling a terrorist attack.
