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Earth
Will El Niño become supersized? What experts are saying
El Niño is here. But will it become supersized? NOAA says there's a 90% or greater chance for El Niño to become "very strong" between September and January.
September 1, 2026
Sun
Sun news: Sun-observing spacecraft sees a solar eclipse
Sun news September 1, 2026: The GOES-19 satellite caught Earth passing in front of the sun over the past day. Take a look at this eclipse!
Astronomy Essentials
Tonight
Visible planets and night sky guide for September
Visible planets and night sky guide: Look for the moon close to Saturn tonight. Plus Jupiter is returning at dawn. Watch the new "this week's sky" video.
September 1, 2026
Space
Pioneer 11: Watching the Saturn watchers
On the 50th anniversary of the launch of Pioneer 10, Patty Winter recalls the day that Pioneer 11 passed the rings of Saturn.
September 1, 2026
Human World
Sapphire: September birthstone comes in many colors
Sapphire, the September birthstone, is typically blue, the color caused by small amounts of titanium and iron in the crystal structure.
September 1, 2026
Earth
Giant trees break a decades-old science theory
Giant trees have evolved remarkable adaptations that allow them to reach extreme heights while maintaining efficient water transport.
August 31, 2026
Earth
Lake Powell hits record low, continues to drop
Lake Powell has hit its lowest level ever. Despite the monsoons, like the flash floods that hit Grand Canyon over the weekend, water levels continue to drop.
August 31, 2026
Space
Roman space telescope has launched! You can adopt a pixel
The Nancy Grace Roman Space Telescope launched on August 30, from the Kennedy Space Center. Want to add your name to a pixel? Find out how here!
August 30, 2026
Astronomy Essentials
Do the planets revolve around the sun? Not exactly
Do the planets revolve around the sun? Not exactly. The sun and planets orbit a common center of mass, which, right now, is outside the sun.
August 30, 2026
Earth
Do you love twilight? The 3 stages explained
Twilight is that magical time between sunlight and darkness. Astronomers, experts on nighttime, recognize 3 stages of twilight.
August 30, 2026
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