Most matter in the universe cannot be seen — but its influence on the largest structures in space can.
Astronomers estimate that roughly 85% of all the matter in the universe is dark matter, meaning only 15% of all matter is normal matter. Accounting for dark energy, the name astronomers give to the accelerated expansion of the universe, dark matter makes up roughly 27% of all the mass energy in the cosmos, according to CERN .
Different galaxies have different proportions of dark matter to normal matter. Some galaxies contain almost no dark matter, while others are nearly devoid of normal matter. But measurement after measurement gives the same average result: Roughly 85% of the matter in the universe does not emit or interact with light.
Lastly, cosmologists can look back to when the cosmos was only a dozen minutes old, when the first protons and neutrons formed. Cosmologists can use our understanding of nuclear physics to estimate how much hydrogen and helium were produced in that epoch.
Canada Latest News, Canada Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Factory matte black Ferrari Enzo heads to auctionHere's your chance to own a unique Ferrari Enzo that previously belonged to the royal family of Brunei.
Read more »
What is dark energy?The dominating form of energy in the cosmos, dark energy is driving the accelerating expansion of the universe, but its nature remains a complete mystery.
Read more »
The world’s biggest optical telescope will explore the dark reaches of the universeExpected to be the world's largest telescope, the Extremely Large Telescope will explore the dark reaches of the cosmos once it's complete.
Read more »
Rick and Morty Season 6 Debuts Episode 8 Opening: WatchRickAndMorty has released the opening for its latest episode, featuring some major villain comebacks!
Read more »
Spider-Verse 2 Tom Holland Cameo Gets Enticing Tease From ProducerAcross The Spider-Verse producer Christopher Miller addressed the possibility of a Tom Holland cameo in the upcoming sequel. 'Let’s say... Anything is possible in the multiverse.'
Read more »
These 20+ Black Friday telescope deals will show you the universeGift the objectively super-cool pastime of exploring the universe with these Black Friday telescope deals.
Read more »