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Stellar Evolution

Infographic describing how the Betelbuddy affects Betelgeuse's apparent brightness.

Betelgeuse, Betelgeuse: Mysterious Companion Key to Its Pulsing Brightness

Categories Physics & Mathematics, Space

Infrared image of the shockwave (red arc) created by the massive giant star Zeta Ophiuchi in an interstellar dust cloud. The tenuous winds of sun-like main-sequence stars are much more difficult to observe

Stellar winds of three sun-like stars detected for the first time

Categories Physics & Mathematics, Space

This illustration shows the orbits of stars very close to Sagittarius A*, a supermassive black hole at the heart of the Milky Way.

Zombie Stars in the Milky Way Eat Their Neighbors to Stay Young

Categories Physics & Mathematics, Space

The ULLYSES program studied two types of young stars: super-hot, massive, blue stars and cooler, redder, less massive stars than our Sun. The top panel is a Hubble Space Telescope image of a star-forming region containing massive, young, blue stars in 30 Doradus, the Tarantula Nebula. Located within the Large Magellanic Cloud, this is one of the regions observed by ULLYSES. The bottom panel shows an artist's concept of a cooler, redder, young star that's less massive than our Sun. This type of star is still gathering material from its surrounding, planet-forming disk.

Hubble Telescope’s Ambitious Survey Provides Unprecedented Insights into the Lives of Stars

Categories Physics & Mathematics, Space

Fig. 1. Combination of a Hubble image of SN 1987A and the compact highly ionized argon source in Fig. 2. The faint blue source in the centre was detected by the NIRSpec instrument on JWST. Outside of this is the rest of the supernova, which contains the most mass and is expanding at thousands of kilometers every second. The inner bright "string of pearls" is gas from the star's outer layers that was ejected about 20,000 years before the explosion. The collision between the rapidly expanding supernova remnant and the ring gives rise to the heated clumps in the ring. Outside the inner ring are two outer rings, which probably arose at the same time as the inner ring was formed. The bright stars to the left and right of the inner ring are unrelated to the supernova. (Illustration: HST, JWST/NIRSpec, J. Larsson)

James Webb telescope detects neutron star in the remnant of a supernova

Categories Physics & Mathematics, Space

Nebula

NASA rocket to see sizzling edge of star-forming supernova

Categories Physics & Mathematics, Space

Astronomers discover striking evidence of ‘unusual’ stellar evolution

Categories Technology

A billowing pair of nearly symmetrical loops of dust and gas mark the death throes of an ancient red-giant star, as captured by Gemini South, one half of the International Gemini Observatory, operated by NSF’s NOIRLab. The resulting structure, said to resemble an old style of English jug, is a rarely seen bipolar reflection nebula. Evidence suggests that this object formed by the interactions between the dying red giant and a now-shredded companion star. The image was obtained by NOIRLab’s Communication, Education & Engagement team as part of the NOIRLab Legacy Imaging Program.

Rare, double-lobe nebula resembles overflowing cosmic ‘jug’

Categories Physics & Mathematics, Space

Galaxy illustration

Hawaiʻi astronomers find a planet that shouldn’t exist

Categories Social Sciences

Astronomers discover clues about stellar ‘glitching’

Categories Technology

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