Filaments: gentle giants in space, PgII

Key Highlights:

• Cosmic filaments are the universe's largest structures, stretching hundreds of millions of light-years.
• These filaments consist of gas, dark matter, and galaxies, connecting giant galaxy clusters.
• A 50-million-lightyear-long filament, traced by 14 galaxies, was reported by University of Oxford researchers on December 3.
• The galaxies' aligned spin suggests the entire filament is slowly rotating, making it one of the largest spinning structures found.

Detailed Insights:

• Cosmic filaments form at the intersection of matter sheets, acting as pathways for gas and galaxies flowing towards large clusters.
• These filaments influence galaxy formation, growth rate, and gas intake over billions of years.
• Astronomers map filaments by tracing galaxy patterns, confirmed by computer simulations showing their natural formation from early universe ripples.
• The spinning motion of the 50-million-lightyear-long filament supports the theory that these structures can rotate on a grand scale.

Scientific/Technical Concepts Involved:

• Dark Matter: Non-luminous matter that makes up a significant portion of the universe's mass.
• Galaxy Clusters: Large groups of galaxies bound together by gravity.
• Cosmic Web: The large-scale structure of the universe, consisting of filaments, voids, and clusters.