APOD on Nostr: **Astronomy Picture of the Day** 29 November 2024 **Messier 4** ...
**Astronomy Picture of the Day**
29 November 2024
**Messier 4**
Image Credit & Copyright: Steve Crouch
Messier 4 can be found west of bright red-giant star Antares, alpha star of the constellation Scorpius. M4 itself is only just visible from dark sky locations, even though the globular cluster of 100,000 stars or so is a mere 5,500 light-years away. Still, its proximity to prying telescopic eyes makes it a prime target for astronomical explorations. Recent studies have included Hubble observations of M4's pulsating cepheid variable stars, cooling white dwarf stars, and ancient, pulsar orbiting exoplanet PSR B1620-26 b. This sharp image was captured with a small telescope on planet Earth. At M4's estimated distance it spans about 50 light-years across the core of the globular star cluster.
#APOD #SpaceExploration #Astrospace #AstronomyClub #NASAInspires
https://apod.nasa.gov/apod/ap241129.html
29 November 2024
**Messier 4**
Image Credit & Copyright: Steve Crouch
Messier 4 can be found west of bright red-giant star Antares, alpha star of the constellation Scorpius. M4 itself is only just visible from dark sky locations, even though the globular cluster of 100,000 stars or so is a mere 5,500 light-years away. Still, its proximity to prying telescopic eyes makes it a prime target for astronomical explorations. Recent studies have included Hubble observations of M4's pulsating cepheid variable stars, cooling white dwarf stars, and ancient, pulsar orbiting exoplanet PSR B1620-26 b. This sharp image was captured with a small telescope on planet Earth. At M4's estimated distance it spans about 50 light-years across the core of the globular star cluster.
#APOD #SpaceExploration #Astrospace #AstronomyClub #NASAInspires
https://apod.nasa.gov/apod/ap241129.html