Betelgeuse is a red supergiant star in the equatorial constellation of Orion. It is usually the tenth-brightest star in the night sky and, after Rigel, the second brightest in its constellation.

Nov 15, 2025 · Betelgeuse, second brightest star in the constellation Orion, marking the eastern shoulder of the hunter. It has a variable apparent magnitude of about 0.6 and is one of the …

Dec 19, 2025 · Stellarium Web Betelgeuse is easy to find as the red-hued shoulder star of Orion. A variable star, Betelgeuse, usually competes with the brilliant blue-white Rigel for the position …

Oct 8, 2025 · What is Betelgeuse, the Star? Betelgeuse is a unique celestial object. It’s classified as a “red supergiant”—one of the most massive stars in the night sky, which appears orange …

Nov 11, 2025 · Betelgeuse is the closest red supergiant to Earth and expands to about 1.1 billion miles across. Its surface roils with slow, 400-day pulsations. Riding atop those beats is a …

Betelgeuse appears as a bright orange/red star in the upper left ‘shoulder’ of the constellation Orion. This red supergiant-type star is one of the largest you can see with your naked eye.

Few stars have rattled astronomers quite like Betelgeuse, the swollen red beacon in Orion that dimmed so dramatically in recent years that many wondered if it was about to explode. Now a …

Jun 20, 2023 · A guide to star Betelgeuse, including how to pronounce it, how to see it, its dimming episodes and whether it's likely to go supernova.

In July 2025, a new scientific paper confirmed that Betelgeuse is part of a binary star system. The discovery explains the star’s periodic dimming and brightening — not as signs of an imminent …

Jul 26, 2025 · Astronomers have observed what they believe to be a never-before-seen companion star orbiting Betelgeuse, a pulsating red supergiant star in the shoulder of the …