All articles tagged with #astrosphere
Astronomers using the Chandra X-ray Observatory have detected the first astrosphere—an outer wind-driven bubble—around HD 61005, a young sun-like star about 117 light-years away nicknamed the 'Moth.' The feature results from the star’s powerful stellar wind colliding with interstellar material and, captured in a multi-wavelength image, offers a glimpse of what our solar system’s early heliosphere may have looked like.
Astronomers used NASA’s Chandra X-ray Observatory data, combined with infrared and optical observations, to image HD 61005 (the 117‑light-year‑away star nicknamed the Moth) and confirm it has its own astrosphere—a protective bubble similar to the Sun’s heliosphere. The star’s winds are faster and denser than the Sun’s, and if HD 61005 replaced the Sun, its heliosphere could be up to about 10 times wider. The finding provides a rare view of what the early solar system might have looked like and how young planetary systems interact with interstellar space.
Astronomers using NASA’s Chandra X-ray Observatory imaged the faint X-ray glow around HD 61005, a young sun‑like star about 120 light‑years away, revealing a wind‑blown bubble called an astrosphere—the first X-ray evidence of such a bubble around a star similar to the Sun. HD 61005 is ~100 million years old, and its stellar wind is roughly three times faster and 25 times denser than the Sun’s today, inflating a brighter astrosphere in a dense interstellar environment. The finding offers a rare glimpse into the early solar system’s conditions and how stellar winds shape planetary environments.
NASA’s Chandra X-ray Observatory detected an astrosphere around HD 61005, the first image of a Sun-like star’s wind-blown bubble. Located about 120 light-years away and ~100 million years old, HD 61005’s wind is ~3× faster and ~25× denser than the young Sun’s, creating a bubble roughly 200 AU across as it moves through surrounding interstellar gas. The star, nicknamed the “Moth” for its dusty infrared wings, offers a glimpse into the Sun’s past and how its heliosphere may have looked billions of years ago.
Astronomers have detected the first-ever astrosphere around a sunlike star, HD 61005, known as "The Moth." This discovery, made using the Chandra X-ray Observatory, reveals a bubble of hot gas created by the star's stellar wind, extending far beyond the Sun's heliosphere. The finding provides insights into the early conditions of our Sun and the role of astrospheres in shielding planets from cosmic rays, enhancing our understanding of potential life-hosting environments around similar stars.