Modern Cosmology.
Cosmic Structures.
Matter in the universe is not distributed randomly.
Galaxies, quasars, and intergalactic gas outline a pattern that has been compared to soap bubbles - large voids surrounded by thin walls of galaxies, with dense galaxy clusters where walls intersect..
The Hercules–Corona Borealis Great Wall (HCB) or simply the Great Wall is a galaxy filament that is the largest known structure in the observable universe, measuring approximately 10 billion light-years in length (the observable universe is about 93 billion light-years in diameter)..
A cosmological wall is a flattened arrangement of galaxies found surrounding other galaxies, characterized by particularly empty regions called "voids" on either side of it.
These voids seem to squash the galaxies together into a pancake-like shape to make the flattened arrangement.Jan 23, 2023.
In cosmology, galaxy filaments are the largest known structures in the universe, consisting of 'walls' of gravitationally bound galactic superclusters.
These massive, thread-like formations can reach 80 megaparsecs h−1 (or of the order of 160 to 260 million light-years) and form the boundaries between voids..
The Great Wall (also called Coma Wall), sometimes specifically referred to as the CfA2 Great Wall, is an immense galaxy filament.
It is one of the largest known superstructures in the observable universe..
Astronomers have created a gargantuan map of the Milky Way, using a telescope built to detect dark energy.
Featuring more than three billion stars, it focuses on the galaxy's orbital plane -- a region notoriously difficult to study.
Earth's atmosphere scatters starlight so that points of light turn into point clouds.
So, the astronomers just dove r.
The Milky Way is found to be surprisingly massive in comparison to its cosmological wall, a rare cosmic occurrence.
The new findings are based on a state-of-the-art computer simulation, part of the IllustrisTNG project.
The team simulated a volume of the universe nearly a billion light-years across that contains millions of galaxies.
The history of astronomy has been all about recognizing that our place in the universe isn’t all that special.
We’ve gone from the center of all existence to just another planet orbiting an average star in one of billions and billions of galaxies.
However, a new simulation hints that there might be something special about the Milky Way after all.
Our galaxy is larger than should be expected for galaxies within our "cosmological wall," a local flat cluster of galaxies known as the Local Sheet, as described in a paper published in the journal Monthly Notices of the Royal Astronomical Society:
If you wish to make an apple pie from scratch, you must first invent the universe.
And somewhere along the way, you'll need one of the ancient molecular clouds of dust and ice from which stars and habitable planets like Earth are born.
This week, Webb scientists announced that the telescope has spotted just such a place.
It's a stellar nursery call.
Speaking of 3D-printed rocket engines: NASA announced this week that it has successfully validated a next-gen rocket engineit hopes will revolutionize rocket design.
The new engine generates thrust "using a supersonic combustion phenomenon known as a detonation." And this is no experimental error -- their full-scale alpha build produced more than 4.
Every year, NASA holds a memorial for staff, astronauts, and alumni who have died. 2023's Day of Remembrance(Opens in a new window)holds a somber significance, as Feb. 1 is the 20th anniversary of the Columbia disaster.
Unfortunately, this year's fallen also included Apollo 7 pilot Walt Cunningham, who passed earlier this month.
Cunningham was the .
Now that it's been on Mars for a while, the Perseverance rover has filed an authoritative report on Martian weather.
The number one takeaway: It's coldon the Red Planet! The average surface temperature is -67C.
It's also windy on Mars.
Since Mars has an atmosphere, it has surface weather.
It also has an axial tilt, so it has seasons, just like Eart.
Steady as she goes: After a year's delay and a missed launch window, NASA's Psyche mission team is getting the spacecraft in shape to launch this year.
In a blog post, the agency said, "After a one-year delay to complete critical testing, the Psyche project is targeting an October 2023 launch(Opens in a new window)on a SpaceX Falcon Heavy rocket."
Unfortunately, observations of Chariklo and other celestial bodies will have to wait a while.
The JWST had a software glitch this week.
Per NASA, the telescope's Near Infrared Imager and Slitless Spectrograph (NIRISS) "experienced a communications delay within the instrument, causing its flight software to time out." Unfortunately, this led to a so.
Named for the daughter of Apollo, Chariklo is a centaur: a Kuiper belt object that orbits out past Saturn.
It's the first of its kind ever found with a confirmed ring system.
The thing really is tiny; it's about 160 miles in diameter and has less than two percent the mass of Earth.
But a new report from Webb shows even that much mass is enough to s.
A cosmological wall is a flattened arrangement of galaxies found surrounding other galaxies, characterized by particularly empty regions called "voids" on either side of it.
These voids seem to squash the galaxies together into a pancake-like shape to make the flattened arrangement.
This facet, known as the cosmological principle, states that on a large scale, the Universe should look roughly the same everywhere, no matter your position or the direction in which you are looking.
There should be no giant structures, rather space should be smooth and uniform.
Topological soliton
