In other words, Betelgeuse is actually two stars. This hypothesized, unknown star—excellently nicknamed Betelbuddy—is likely ...

To give a sense of scale, if Betelgeuse were placed at the center of our solar system, its surface would extend beyond the ...

However, while the occultation of a star by an asteroid is typically a millisecond event, Betelgeuse is enormous—about 750 times the sun’s diameter. So, over about 12 seconds, the asteroid ...

The story describes Betelgeuse as “the red giant that marks Orion’s left shoulder.” Reader Chris Jespersen wrote: “I often see Betelgeuse on Orion’s right shoulder…. Am I mistaken?” ...

This figure shows measurements of Betelgeuse's brightness from different observatories from late 2018 to present. The blue and green points represent data from ground-based observatories.

When Betelgeuse, a red supergiant star in the constellation Orion, eventually goes supernova—likely within the next 100,000 years—the night sky will light up as if a second sun appeared ...

Using the same data they have also made the first map of the velocities of material the atmosphere of a star other than the Sun. Red supergiant stars such as Betelgeuse and Antares are the ...

The knot of bright winter constellations reaches its highest point in the south during the mid-evening hours of February. Most recognizable is Orion, with his glowing sword hanging below the three ...