Since the 1980s, a strange X-ray emission has puzzled astronomers. At the heart of the Helix Nebula, a dying star may have ...

In this image from NASA's Spitzer Space Telescope, "cometary knots" on the Helix Nebula show blue-green heads caused by excitation of their molecular material from shocks or ultraviolet radiation.

36,279 people played the daily Crossword recently. Can you solve it faster than others?36,279 people played the daily Crossword recently. Can you solve it faster than others? 'We're disappointed ...

The James Webb Space Telescope was late to launch, but the observatory is making up for lost time. After several years of operation, Webb has captured some truly stunning cosmic vistas, complete ...

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34,691 people played the daily Crossword recently. Can you solve it faster than others?34,691 people played the daily Crossword recently. Can you solve it faster than others?

After tracking a puzzling X-ray signal from a dying star for decades, astronomers may have finally explained its source: The old star might have destroyed a nearby planet. Dating back to 1980, X ...

The Helix Nebula. Credit: X-ray: NASA/CXC/SAO/Univ Mexico/S. Estrada-Dorado et al.; Ultraviolet: NASA/JPL; Optical: NASA/ESA/STScI (M. Meixner)/NRAO (T.A. Rector ...

A nearby galaxy is ablaze with new stars in a dazzling new image from the James Webb Space Telescope. Located 45 million light-years from Earth in the constellation Canis Major, this barred spiral ...

Astronomers using the James Webb Space Telescope (JWST) have discovered complex atmospheric changes on SIMP 0136, a free-floating planetary object not orbiting a star. Infrared observations ...

Helix Nebula: Helix Nebula is a planetary nebula, which is formed when a star like the Sun runs out of fuel, expands and its outer layers puff off, and then the core of the star shrinks.