10 Enormous Cosmic Structures | Summary and Q&A

TL;DR

The universe is filled with mind-blowingly huge structures, including superclusters, protoclusters, voids, and more.

Key Insights

• 🌌 The Laniakea Supercluster includes our Milky Way galaxy and is subdivided into clusters and groupings, with some parts obscured by the Zone of Avoidance.
• 🙂 The Hyperion Proto-Supercluster, seen at a distance of 11 billion light years, provides clues about the early universe and the interaction of dark matter.
• 🤨 The Local Void raises questions about dark energy and its impact on the expansion of cosmic structures.
• 🤗 The presence of structures exceeding the expected size challenges current models and opens up possibilities for understanding dark energy and gravity properties.
• 🇼🇫 The CMB Cold Spot, Huge LQG, and Hercules Corona Borealis Great Wall are other notable structures in the universe.
• 🤩 Gamma-ray bursts provide insights into the Hercules Corona Borealis Great Wall, potentially indicating a region of dense star formation.

Transcript

the universe if nothing else is full of very big things planets can be enormous as can star systems galaxies and so on but how big do things really get in the universe the answer is mind-blowingly huge so here are 10 enormous cosmic structures number 10 the laniakia supercluster one particularly interesting giant structure in the universe is intere... Read More

Questions & Answers

Q: How many galaxies are estimated to be a part of the Laniakea Supercluster?

The Laniakea Supercluster is estimated to contain around 100,000 galaxies, including the Milky Way.

Q: What is the significance of the Hyperion Proto-Supercluster?

The Hyperion Proto-Supercluster is important because it shows a mismatch in gravity behavior, indicating the involvement of dark matter dating back to the early universe.

Q: Why does the Local Void have fewer galaxies than expected?

The Local Void's lack of galaxies is still unknown, but it may be growing and expanding away from the void's center due to the involvement of dark energy.

Q: What challenges the concept of an upper limit to cosmic structures?

The presence of apparent structures exceeding the expected size in the universe raises questions about the role of dark energy and suggests the possibility of unknown gravity properties.

Summary & Key Takeaways

• The Laniakea Supercluster, of which the Milky Way is a part, contains about 100,000 galaxies and is over 500 million light years in size.

• The Hyperion Proto-Supercluster, seen at a distance of 11 billion light years, shows a mismatch in gravity behavior, suggesting the involvement of dark matter.

• The Local Void, about 150 million light years in size, is expanding and has fewer galaxies than expected, leading to questions about the presence of dark energy.

• The Upper Limit of cosmic structures is challenged by apparent structures in the universe that exceed the expected size, potentially due to the accumulation of dark energy or unknown properties of gravity.