Hubble Telescope

Imagine a storm twice Earth’s size raging for centuries—that’s Jupiter’s Great Red Spot, a ruby-red maelstrom that’s been swirling since at least the 17th century. As the solar system’s behemoth, …

For decades, astronomers assumed the universe’s expansion would decelerate under gravity’s inexorable tug. Yet, observations shattered that view, revealing dark energy as the culprit behind accelerating cosmic growth—a puzzle persisting …