Is the Eridanus Supervoid?

The next big nothing on our list is the Eridanus Supervoid, which is located in the direction of the constellation Eridanus, about 6 to 10 billion light years away. The clusters give off more energy than the voids and create these variances. One of the largest cold spots found is theorized to be this supervoid.

When was the Eridanus Supervoid discovered?

2007
The Eridanus Supervoid is a large supervoid (an area of the universe devoid of galaxies) discovered as of 2007. At a diameter of about one billion light years it is the second largest known void, superseded only by the Giant Void in Canes Venatici.

What was wrong with the supervoid that it couldn’t explain the cold spot?

Supervoids cause temperature drops because CMB photons entering a void lose energy. This energy is regained when leaving the void but, because of the expansion of the universe, the photons must travel farther and end up leaving with less energy, making that region look colder on the map.

Is it possible for universes to collide?

The reason we don’t see evidence for our Universe colliding with another is because our Universe has never collided with another one, just as our leading theories predict.

What is a cold spot?

cold spot. noun. an area where house prices are stable and properties are slow to sell.

What is Edge of the universe?

The edge simply marks the dividing line between locations that earthlings can currently see and locations that we currently cannot. And although our observable universe has an edge, the universe as a whole is infinite and has no edge.

What is the myth of Eridanus?

The best known myth associated with Eridanus is the rise and fall of Phaeton, son of Helios the Sun god (Apollo). Helios’s task as a god was to take the reins of a chariot lead by white horses and traverse the heavens above earth.

What does the name Eridanus mean?

Eridanus is a constellation. It is represented as a river; its name is the Ancient Greek name for the Po River.

What is a Supervoid in space?

At nearly 330 million light-years in diameter (approximately 0.27% of the diameter of the observable Universe), or nearly 236,000 Mpc3 in volume, the Boötes void is one of the largest known voids in the Universe, and is referred to as a supervoid. Gregory published their findings of eight galaxies in the void.

What caused the cold spot in the universe?

Perhaps the answer to the CMB cold spot lies within the theory of inflation itself, instead of beyond it. It might be that during the inflationary epoch in our universe’s infancy, a local patch of the universe underwent a longer period of inflation, which resulted in the formation of a cold spot in that region.

What if our universe collided with another universe?

If the universe that we inhabit had long ago collided with another universe, the crash would have left an imprint on the cosmic microwave background (CMB), the faint afterglow from the Big Bang. And if physicists could detect such a signature, it would provide a window into the multiverse.

Is the Eridanus supervoid?

Such a deep void has not been found in large-scale structure analyses of the area, but there is firm evidence for a large but shallow supervoid in constellation Eridanus (Finelli et al.

What is the largest supervoid in the universe?

the Boötes void
At nearly 330 million light-years in diameter (approximately 0.27% of the diameter of the observable Universe), or nearly 236,000 Mpc3 in volume, the Boötes void is one of the largest known voids in the Universe, and is referred to as a supervoid.

What is in the CMB cold spot?

The CMB Cold Spot or WMAP Cold Spot is a region of the sky seen in microwaves that has been found to be unusually large and cold relative to the expected properties of the cosmic microwave background radiation (CMBR). At some points, the “cold spot” deviates 140 µK colder than the average CMB temperature.

What is a supervoid in space?

Astronomers have discovered a barren cosmological orb 1.8 billion light-years wide. Dubbed the “supervoid,” this immense stretch of relative emptiness (compared to the rest of the universe) helps solve one question scientists have been teasing apart for a decade.

Is the Milky Way located in a void?

Our Galaxy Is Also Surrounded By A Void. Not only is the inside of the Milky Way home to a big void, but chances are we’re also surrounded by one. This is known as a Local Void, and likely surrounds the outside of the Milky Way galaxy. However, our galaxy tends to move towards areas with more density.

How cold is the CMB?

The CMB is like a photograph of what the universe looked like when it was 380,000 years old and had a temperature of 3,000 degrees Kelvin. What we find is that it is very smooth with temperature deviations of less than one part in 10,000.

Is the Milky Way in a Supervoid?

As with other voids, it is not completely empty but contains the Milky Way, the Local Group, and a larger part of the Laniakea Supercluster. The existence of supervoids have been shown to be consistent with the standard cosmological model.

Why is the CMB microwave?

The cosmic microwave background (CMB) is thought to be leftover radiation from the Big Bang, or the time when the universe began. As the theory goes, when the universe was born it underwent a rapid inflation and expansion. The CMB represents the heat left over from the Big Bang.