Articles with tagged Galaxies


milky way history

Milky Way History

A new study puts more precise dates on when the Milky Way formed its thick disk and collided with a neighboring galaxy. Mar 23, 2022 ... Xiang and Rix discovered that the Milky Way's thick disk got it [ReadMore..]

origin of the milky way

Origin Of The Milky Way

The pigment analysis of Tintoretto's' The Origin of the Milky Way' revealed a very complex paint layer structure and the use of the rare pigment realgar. Zeus was very fond of his son Hercules who was [ReadMore..]

information about the milky way

Information About The Milky Way

Like early explorers mapping the continents of our globe, astronomers are busy charting the spiral structure of our galaxy, the Milky Way.  Nov 8, 2017 ... Using infrared images from NASA's Spitzer S [ReadMore..]

history of milky way galaxy

History Of Milky Way Galaxy

A new study puts more precise dates on when the Milky Way formed its thick disk and collided with a neighboring galaxy. Mar 23, 2022 ... Xiang and Rix discovered that the Milky Way's thick disk got it [ReadMore..]

expansion theory of the universe

Expansion Theory Of The Universe

This web exhibit from the American Institute of Physics explores the history of cosmology from ancient Greek astronomy to modern space telescopes. In the early 20th century the common worldview held t [ReadMore..]

expansion rate of universe

Expansion Rate Of Universe

We present a new methodology to determine the expansion history of the Universe analyzing the spectral properties of early type galaxies (ETG). We found that for these galaxies the 4000Åbreak is a sp [ReadMore..]

history of the milky way

History Of The Milky Way

ABSTRACT. Globular clusters (GCs) formed when the Milky Way experienced a phase of rapid assembly. We use the wealth of information contained in the Galactic GC In a recent paper, we used the age–me [ReadMore..]

why is space expanding

Why Is Space Expanding

Space is expanding ever more rapidly and scientists are researching dark energy to understand why. Jun 21, 2017 ... A competing theory posits that the universe is expanding ever more rapidly because g [ReadMore..]

is our universe expanding

Is Our Universe Expanding

The evolution and content of our ballooning universe Jan 18, 2022 ... If so, the universe has no bounds and will expand forever, but the rate of expansion will gradually approach zero (opens in new ta [ReadMore..]

rate of universe expanding

Rate Of Universe Expanding

The Hubble telescope just made its best measurement yet of the universe's current expansion rate, but it still doesn't match the early universe. May 21, 2022 ... The new study confirms previous expans [ReadMore..]

speed of expanding universe

Speed Of Expanding Universe

Scientists aren't sure, and all of cosmic history depends on it Jul 16, 2019 ... Already mindbogglingly large, the universe is actually getting bigger all the time. Some of the nearest galaxies to our [ReadMore..]

history of milky way

History Of Milky Way

Untangling the Galaxy. I. Local Structure and Star Formation History of the Milky Way. Marina Kounkel1 ... [ReadMore..]

formation of the milky way galaxy

Formation Of The Milky Way Galaxy

Jan 5, 2006 ... "Determining star formation rates in our galaxy can be difficult because gas and dust in the Milky Way's spiral arms obscure star formation ... [ReadMore..]

formation of milky way galaxy

Formation Of Milky Way Galaxy

New research pinpointed the ages of nearly a quarter of a million stars in our galaxy to help show how it was assembled. Mar 23, 2022 ... Astronomers have gained a fresh understanding of the Milky Way [ReadMore..]

black hole universe theory

Black Hole Universe Theory

A black hole cosmology is a cosmological model in which the observable universe is the interior of a black hole. Such models were originally proposed by ... [ReadMore..]

cosmic burst

Cosmic Burst

A flash of luck helped astronomers solve a cosmic mystery: What causes powerful but fleeting radio bursts that zip and zigzag through the universe... Nov 4, 2020 ... Scientists have known about these [ReadMore..]

eternal expansion theory

Eternal Expansion Theory

In an eternally inflating universe, anything that can happen will happen; in fact, it will happen an infinite number of times Jan 15, 2020 ... As a consequence, inflation is eternal; once it begins, . [ReadMore..]

what was before the big bang

What Was Before The Big Bang

Asking science to determine what happened before time began is like asking, "Who were you before you were born?" Jun 9, 2021 ... Like an elastic fabric, space stretches out and the galaxies are carrie [ReadMore..]

why does space exist

Why Does Space Exist

Roughly 70% of the Universe is made of dark energy. Dark matter makes up ... As more space comes into existence, more of this energy-of-space would appear. [ReadMore..]

how does the universe exist

How Does The Universe Exist

The overwhelming majority of scientists still takes it for granted that classical mechanics (ClM) is nothing but a limiting case of quantum mechanics (QM). Although some physicists restrict this belie [ReadMore..]

why is there a universe

Why Is There A Universe

A recent challenge to Stephen Hawking’s biggest idea — about how the universe might have come from nothing — has cosmologists choosing sides. Jun 6, 2019 ... Hawking, in his brilliance, saw a wa [ReadMore..]

expansion of space

Expansion Of Space

The latest measurements with the Hubble Space Telescope suggest the universe is expanding faster than scientists' models predict—a hint that some unknown ingredient could be at work in the cosmos. D [ReadMore..]

origin of the universe theories

Origin Of The Universe Theories

The term "evolution" usually refers to the biological evolution of living things. But the processes by which planets, stars, galaxies, and the universe form and change over time are also types of "evo [ReadMore..]

formation of the milky way

Formation Of The Milky Way

ESA’s Gaia mission has made a major breakthrough in unravelling the formation history of the Milky Way.  Oct 31, 2018 ... ESA's Gaia mission has made a major breakthrough in unravelling the formati [ReadMore..]

video of milky way galaxy

Video Of Milky Way Galaxy

The Milky Way is destined to get a major makeover during an encounter with the Andromeda galaxy, predicted to happen 4 billion years from now. May 31, 2012 ... The video also shows the Triangulum gala [ReadMore..]

milky way galaxy for kids

Milky Way Galaxy For Kids

The Milky Way is a spiral galaxy that’s about 100,000 light years across containing billions of stars. It belongs to a cluster of galaxies called the Local Group. Apr 22, 2019 ... The Milky Way is j [ReadMore..]

milky way galaxy facts

Milky Way Galaxy Facts

10 Facts about the Milky Way Emalee Couture 9/18/15 1. It’s warped. The Milky Way is a disk that measures about 120,000 light years across, with a central bulge that has a diameter of about 12,000 l [ReadMore..]

milky way formed

Milky Way Formed

How galaxies, including our Milky Way, were born out of the early cosmos is just beginning to come into focus. Jul 1, 2019 ... If this is correct, the Milky Way probably formed when star clusters came [ReadMore..]

what is the universe expanding into

What Is The Universe Expanding Into

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts Apr 18, 2021 ... We see a [ReadMore..]

how is the universe expanding

How Is The Universe Expanding

Space is expanding ever more rapidly and scientists are researching dark energy to understand why. Jun 21, 2017 ... A competing theory posits that the universe is expanding ever more rapidly because g [ReadMore..]

deadly gamma ray burst

Deadly Gamma Ray Burst

Second largest such event wiped out two-thirds of all species some 440 million years ago. By Ernie Tretkoff. A gamma ray burst may have caused the Ordovician extinction, suggests Brian Thomas and coll [ReadMore..]

gamma ray burst danger

Gamma Ray Burst Danger

WR 104: A nearby gamma-ray burst? Mar 3, 2008 ... ... astronomical dangers to life on Earth — especially from explosions called gamma-ray bursts — are incredibly rare, and not worth fretting ... [ReadMore..]

how much numbers exist

How Much Numbers Exist

From the Amazon to Nicaragua, there are humans who never learn numbers. What can these anumeric cultures teach us about ourselves? Apr 25, 2017 ... What's more, the 7,000 or so languages that exist to [ReadMore..]

how many numbers exist

How Many Numbers Exist

Taiwan - the United Nations considers it represented by the People's Republic of China; The Cook Islands and Niue, both states in free association with New ... [ReadMore..]

how fast is the universe expanding

How Fast Is The Universe Expanding

The universe is getting bigger every second — but how fast? Astronomers using NASA's Hubble Space Telescope say they have crossed an important threshold in revealing a discrepancy between the two ke [ReadMore..]

what is space expanding into

What Is Space Expanding Into

Dec 13, 2017 ... Humanity's Expansion into Deep Space Is Inevitable, Industry Experts Say ... There will be a market for humanity's expansion beyond Earth orbit, ... [ReadMore..]

expansion of the universe

Expansion Of The Universe

The latest measurements with the Hubble Space Telescope suggest the universe is expanding faster than scientists' models predict—a hint that some unknown ingredient could be at work in the cosmos. D [ReadMore..]

universe expanding at increasing speed

Universe Expanding At Increasing Speed

Physicists have proposed extra cosmic ingredients that could explain the faster-than-expected expansion of space. Apr 27, 2020 ... An extra dose of dark energy in the early universe, dubbed early dark [ReadMore..]

expansion of the universe speed

Expansion Of The Universe Speed

According to Einstein, no matter can travel faster than light. So how did the early Universe expand at a rate faster than light? Feb 2, 2022 ... It is perfectly true that Einstein's special theory of [ReadMore..]

how fast is the universe expanding mph

How Fast Is The Universe Expanding Mph

May 11, 2022 ... That is because the Earth itself is rotating at a speed of around 1,000 miles per hour. Astronomy Scale and History of the Universe Expansion of ... [ReadMore..]

how will the universe end

How Will The Universe End

The universe will cease to exist around the same time our sun is slated to die, according to new predictions based on the multiverse theory. Oct 28, 2010 ... The universe will cease to exist around th [ReadMore..]

does the universe ever end

Does The Universe Ever End

Dear Dr. Universe: Where does the universe end? — Oriah, 8, Pullman Feb 29, 2020 ... When you look up at the night sky, it can feel like the universe is a big blanket of stars above you. But unlike [ReadMore..]

end of the universe theories

End Of The Universe Theories

Researchers theorize on whether the cosmos will end in fire, ice or something else. The Big Freeze. Many current theories suggest dark energy is a cosmological constant, a kind of uniform energy that [ReadMore..]

where does the universe end

Where Does The Universe End

In the far, far future, cosmologists find a final supernova light show The known laws of physics suggest that by about 10100 (the No. 1 followed by 100 zeros) years from now, star birth will cease, ga [ReadMore..]

will the universe die

Will The Universe Die

Astrophysicist Katie Mack’s book explores all the ways the cosmos could destroy itself. Aug 10, 2020 ... Scientists know how the world will end. The Sun will run out of fuel and enter its red-giant [ReadMore..]

universe expantion

Universe Expantion

By the end of this section, you will be able to: Describe how we estimate the age of the universe; Explain how changes in the rate of expansion over time affect ... [ReadMore..]

shape of the universe nasa

Shape Of The Universe Nasa

We have long thought the universe was flat. New research shows it could be curved, and that raises questions about our understanding of the cosmos. Nov 6, 2019 ... Figure from the 1600s showing Ptolem [ReadMore..]

cosmology news today

Cosmology News Today

Cosmologist Kendrick Smith will present a free live Webcast on the quest to understand the origin of the universe   Feb 4, 2015 ... Watch Live Today: The Future of Cosmology [Video]. Cosmologist Ken [ReadMore..]

dark matter is found in

Dark Matter Is Found In

Astronomers found the best evidence yet for a galaxy without dark matter. This discovery could reshape how scientists think galaxies form. Dec 9, 2021 ... Astronomers may have found a galaxy that form [ReadMore..]

define dark matter

Define Dark Matter

Cross-campus collaboration brought together a quantum physicist and a geophysicist to look for particles Oct 31, 2017 ... Physics professors Andrei Derevianko, left, and Geoff Blewitt of the College o [ReadMore..]

facts about dark matter

Facts About Dark Matter

Abstract. Accurately predicting the demographics of dark matter (DM) substructure is of paramount importance for many fields of astrophysics, including gravitat Accurately predicting the demographics [ReadMore..]

dark matter studies

Dark Matter Studies

The digital electronics designed, developed, delivered, and installed by Rochester researchers are an integral piece of the dark matter particles puzzle. Jul 22, 2019 ... Components needed to fully as [ReadMore..]

flat universe definition

Flat Universe Definition

This is fully understandable in terms of general relativity because a globally spatially flat universe, by definition, must have a net zero energy density. [ReadMore..]

is the universe flat nasa

Is The Universe Flat Nasa

The most powerful telescope ever built is scheduled to launch on December 18. The James Webb Space Telescope will peer into the atmospheres of exoplanets, some of which are potentially habitable, and [ReadMore..]

what does flat universe mean

What Does Flat Universe Mean

Dec 4, 2017 ... No, being flat and being homogeneous is not equivalent†. Flatness refers to the geometry, which depends on the total energy density ρ; ... [ReadMore..]

the universe is not expanding

The Universe Is Not Expanding

Mar 17, 2015 ... Hubble used an additional 22 galaxies for which velocities were available (from Slipher measurements), but no individually estimated distances. [ReadMore..]

expanding universe theory

Expanding Universe Theory

We present a conformal field theory - obtained from a gauged WZW model - that describes a closed, inhomogeneous expanding and recollapsing universe in… Oct 29, 1992 ... We present a conformal field [ReadMore..]

is the universe expanding faster than light

Is The Universe Expanding Faster Than Light

Measurements taken by Hubble space telescope conflict with studies of radiation left over from Big Bang – fuelling theories of ‘dark energy’ and mystery particles Jun 3, 2016 ... Nasa and the Eu [ReadMore..]

is the universe really expanding

Is The Universe Really Expanding

Behind the astronomical dispute that’s splitting apart the cosmos. Jan 19, 2019 ... Measurements of the Hubble constant made by directly observing stars yield a cosmic expansion rate of 73. Measurem [ReadMore..]

why is the universe expanding

Why Is The Universe Expanding

Yes, the Universe is expanding, but you might wonder, "how fast is it expanding?" Here's what you need to know. Feb 11, 2022 ... Yes, the Universe is expanding, but you might wonder, "How fast is it e [ReadMore..]

what is outside our universe

What Is Outside Our Universe

According to general relativity (GR), a universe with a cosmological constant $Λ$, like ours, is trapped inside an event horizon, $r< \sqrt{3/Λ}$. What is outside? We show, using Israel (1967) junct [ReadMore..]

is the universe expanding fast

Is The Universe Expanding Fast

Measurements taken by Hubble space telescope conflict with studies of radiation left over from Big Bang – fuelling theories of ‘dark energy’ and mystery particles Jun 3, 2016 ... Nasa and the Eu [ReadMore..]

milky way facts

Milky Way Facts

The Milky Way Galaxy is an immense and very interesting place. Not only does it measure some 120,000–180,000 light-years in diameter, it is home to planet Earth, the birthplace of humanity. Our Sola [ReadMore..]

milky way galaxy spiral arms

Milky Way Galaxy Spiral Arms

The European Gaia mission keeps uncovering the mysteries of the Milky Way. Jul 30, 2021 ... The Milky Way is known to have two main spiral arms, the Perseus arm and the Scutum-Centaurus arm. Our galax [ReadMore..]

the milky way

The Milky Way

For the first time, scientists have completely mapped one of the 'bones' of the Milky Way galaxy. 1 day ago ... For the first time, scientists have completely mapped one of the 'bones' of the Milky Wa [ReadMore..]

diagram of milky way galaxy

Diagram Of Milky Way Galaxy

Edwin Hubble's classic article on the expanding universe appeared in PNAS in 1929 [Hubble, E. P. (1929) Proc. Natl. Acad. Sci. USA 15, 168–173]. The chief result, that a galaxy's distance is proport [ReadMore..]

milky way galaxy arms

Milky Way Galaxy Arms

An international research team, with significant participation of astronomers from the Max Planck Institute for Astronomy (MPIA), has gained important insights into the origin of the material in the s [ReadMore..]

stars in milky way galaxy

Stars In Milky Way Galaxy

Jan 7, 2020 ... The stars seemingly formed not from material from the Milky Way, but from two nearby dwarf galaxies known as the Magellanic Clouds. Those ... [ReadMore..]