Facts about the red giant star and where to find it are explained by Space.com's Chelsea Gohd. [Betelgeuse: The Eventual ...

Astronomers modeled sunspot activity on a nearby red giant star to learn about its chaotic interior. Sunspots, which are temporarily darkened areas on the surface of the sun, are the result of ...

New ground- and space-based infrared observations are giving astronomers a better handle on the true populations of red ...

The Moon meets the Red Planet’s rival in Scorpius, skims close to Saturn, and reaches New phase in the sky this week.

As the largest planet in our solar system, Jupiter reflects a lot of the Sun’s light even though it is more than five times ...

This extraordinary system consists of two aging stars: a red giant and a white dwarf. The white dwarf acts as a cosmic thief, pulling material from its red giant companion in a process called ...

Infrared images of a red giant star about 30,000 light years away, near the centre of our Milky Way galaxy, that faded away and then reappeared over the course of several years.

RIT Professor Joel Kastner leads a research team that determines the true three-dimensional structure of the iconic Ring ...

around a hundred red giant stars—some of the oldest stars in our galaxy—some of which appear to pre-date the Milky Way's collision with another small galaxy called the Gaia-Enceladus-Sausage.

At this stage, the star becomes a large red giant. Because a red giant is so large, its heat spreads out and the surface temperatures are predominantly cool, but its core remains red-hot.

Recently, however, astronomers have been keeping track of starspot activity on a red giant star called XX Trianguli, and the irregular behaviour of its starspots suggests its interior may have ...