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First Image of Unique Astrosphere Captured Around Star HD 61005

2/23/2026

Summary

Astronomers Capture Astrosphere

Astronomers captured the first image of an astrosphere around star HD 61005.
HD 61005 lies 120 light-years from Earth and is roughly 100 million years old.
Its stellar wind is three times faster and 25 times denser than the Sun's.
The astrosphere is shaped by the star's winds and surrounded by dense interstellar dust.
Observations from NASA's Chandra X-ray Observatory and Hubble inform the Sun's early evolution and solar winds.

Summary

Webb Detects Progenitor

The James Webb Space Telescope identified the progenitor star of supernova 2025pht in galaxy NGC 1637, the first pre-explosion progenitor detection.
The red supergiant progenitor existed before its explosion and was hidden by dust, making it undetectable by the Hubble Space Telescope.
The dust surrounding the progenitor is likely carbon-rich, contrary to silicate-rich dust expectations.
Future observations by the Nancy Grace Roman Space Telescope will locate similar progenitors before they explode.

History

Historical Context

The Hubble Space Telescope launched in 1994, transforming astronomy by capturing detailed images of celestial bodies. This followed centuries of advancements, including the 1921 measurement of stellar diameters by Albert A. Michelson and the 1930s development of stellar evolution models. Hubble's discoveries, such as the influence of stellar winds on astrospheres, enhance our understanding of the universe and set the stage for future telescopes like the Nancy Grace Roman Space Telescope.

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Astronomers Capture Astrosphere

Astronomers captured the first image of an astrosphere around star HD 61005.
HD 61005 lies 120 light-years from Earth and is roughly 100 million years old.
Its stellar wind is three times faster and 25 times denser than the Sun's.
The astrosphere is shaped by the star's winds and surrounded by dense interstellar dust.
Observations from NASA's Chandra X-ray Observatory and Hubble inform the Sun's early evolution and solar winds.

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