Tag: spiral

What is a globular cluster?

Globular clusters are spherical collections of up to perhaps a million stars, orbiting mostly in the star halo of spiral galaxies, containing some of a galaxy’s oldest stars. Source: https://earthsky.org/space/definition-what-is-a-globular-cluster…

Galaxy Cruise—Your galactic journey as a citizen scientist

The Universe is full of galaxies of various shapes; some galaxies have spiral arms and others don’t. Why do galaxies show such diversity? Galaxies are thought to grow by interacting and merging with other galaxies; and the galaxy mergers may be the key process creating the variety. Why don’t you explore the Universe as a citizen scientist to help unlock the…

Image: Hubble embraces spiral with open arms

The spiral galaxy NGC 2008 sits center stage, its ghostly spiral arms spreading out toward us, in this image captured by the NASA/ESA Hubble Space Telescope. Source: https://phys.org/news/2020-02-image-hubble-embraces-spiral-arms.html…

Mysterious fast radio burst repeats in 16-day rhythm

For the first time, a fast radio burst has been found to be repeating, in a regular 16-day cycle. The baffling detection from the CHIME radio telescope deepens the mystery of these bizarre intergalactic objects. Source: https://earthsky.org/space/mysterious-fast-radio-burst-repeats-in-16-day-rhythm…

Star-hop: Pegasus to Andromeda galaxy

The 4 stars of the Great Square of Pegasus are easy to find. Ready? Let’s star-hop! Source: https://earthsky.org/tonight/star-hop-from-great-square-of-pegasus-to-andromeda-galaxy…

800-year-old spiral rock carvings marked the solstices for Native Americans

The Pueblo people created rock carvings in the Mesa Verde region of the Southwest United States about 800 years ago to mark the position of the sun on the longest and shortest days of the year. Source: https://www.livescience.com/spiral-petroglyphs-southwest-marked-solstices.html