Wednesday, July 24, 2019
Contact us    |    Advertise    |   Help    |   Cookie Policy    |   Privacy Policy    RSS icon Twitter icon Facebook icon
    Home  ·  News  ·  Forum  ·  Stories  ·  Image Gallery  ·  Columns  ·  Encyclopedia  ·  Videos
Find: in

Mystery surrounds universe's rate of expansion


Posted on Sunday, 5 August, 2018 | Comment icon 34 comments

The expansion rate of the universe does not appear to be consistent. Image Credit: NASA/ESA/ESO
Scientists have discovered discrepancies in our understanding of how fast the universe is expanding.
The mystery concerns the fact that new measurements from the Hubble Space Telescope and the Gaia space telescope indicate that the rate of expansion nearby is 73.5 kilometers per second per megaparsec - a figure that contradicts earlier measurements of the rate of expansion in the distant universe which appears to be only 67 kilometers per second per megaparsec.

Even stranger is the fact that these two figures seem to be getting further apart, rather than closer together, the more scientists refine their calculations.

"At this point, clearly it's not simply some gross error in any one measurement," said study lead author Adam Riess of the Space Telescope Science Institute (STScI) in Baltimore.

"It's as though you predicted how tall a child would become from a growth chart, and then found the adult he or she became greatly exceeded the prediction. We are very perplexed."

The mystery adds to the already substantial list of questions scientists have about the expansion of the universe. Why is it expanding ? Why is the expansion accelerating ? What is it expanding in to ?

Some believe that the key lies in dark matter and dark energy - two invisible yet highly influential forms of matter and energy that we cannot directly detect.

Others, meanwhile, suggest that a type of undiscovered subatomic particle may be to blame.

The search for answers continues.

Source: Space.com | Comments (34)

Tags: Universe, Expansion

Recent comments on this story
Comment icon #25 Posted by RoofGardener on 6 August, 2018, 11:16
Could be ! But then.. you'd have to re-write Special Relativity ? 
Comment icon #26 Posted by Ell on 6 August, 2018, 11:45
The universe does not expand.
Comment icon #27 Posted by StarMountainKid on 6 August, 2018, 16:44
What is space?
Comment icon #28 Posted by paperdyer on 6 August, 2018, 19:26
Maybe the universe has been eating too much dark matter and just needs to go on a diet. 
Comment icon #29 Posted by qxcontinuum on 7 August, 2018, 2:13
The universe does not expand anywhere. Our spiral galaxy rotates creating the illusion of rotation. Scientific speculations are wrong
Comment icon #30 Posted by hunterjuly29 on 8 August, 2018, 4:17
When things continue to expand and expand, what eventually happens? Do they fade away? You tell me. I like the part about "scientists are perplexed". Aren't they always?
Comment icon #31 Posted by StarMountainKid on 8 August, 2018, 15:24
Energy cannot be created nor destroyed. So, as space expands, does the (uncertain) energy per volume of space become diluted? I've also read that dark energy remains constant per volume of space.   In a sense, there is no such entity as dark energy, the expansion of space is a natural characteristic of space itself. Space expands, that's part of what it is. 
Comment icon #32 Posted by EBE Hybrid on 9 August, 2018, 20:58
I watched a great programme about this, Horizon on BBC4 a few weeks back, there was a brilliant physicist, Aussie called Tamara Davis featured in the programme. It's deffo worth looking for the episode of Horizon on BBC iPlayer and also worth looking at the videos on Tamara Davis page
Comment icon #33 Posted by L.A.T.1961 on 9 August, 2018, 21:19
I have quite liked the idea of dark gravity, probably not allowed by the laws of physics as its my idea. It came out of a late night conversation which included quite a lot of alcohol. Basically gravity would reflect back into the universe from its edge. So to work the universe needs to have an edge which would reflect gravity back. I should probably have made a few notes at the time.   Believe it or not I sent the idea to Sky at Night mag, they used to publish letters in the back, strangely my letter did not appear. So if Chris Lintott proposes a new idea for dark mater I will be very suspici... [More]
Comment icon #34 Posted by cyclopes500 on 10 August, 2018, 20:30
What about a weak temporary form of gravity in moving objects. Particles in an accelerator won't go faster than the speed of light because their mass becomes infinite if I remember right. How about this temporary mass generating its own gravity, or something like it. Its weak but its pull gets added to normal gravity. If so a galaxy could be held together by its own movement.


Please Login or Register to post a comment.


  On the forums
Anomalies found in 'sonic attack' victims' brains
7-23-2019
Scientists have identified 'significant differences' in the brains of the diplomats 'attacked' in Cuba.
Cat filter strikes again during press conference
7-23-2019
A Canadian police press conference about a mysterious double homicide was marred by 'technical difficulties'.
Paranormal author Rosemary Ellen Guiley dies
7-23-2019
The 69-year-old, who wrote dozens of books on a wide variety of paranormal topics, has sadly passed away.
RNLI warns against 'Storm Loch Ness' event
7-22-2019
Lifeboat officials in Scotland have warned social media users not to flock to the world famous loch en masse.
Stories & Experiences
House vibrates
7-20-2019 | Northern part of lower Michigan
 
Sudden writing on hand
7-20-2019 | England
 
 
Spontaneous exorcisms
7-5-2019 | Ontario
 
A call from 'The Lobster'
7-5-2019 | Russia
 
Witnessing tree spirits
6-25-2019 | Ontario
 
I didn't move my blankets
6-25-2019 | Spring, TX
 
Bitten by a spirit?...true story
6-15-2019 | Dallas, Tx
 
Bed shaking
6-15-2019 | India
 
Red floating lights
6-15-2019 | Canada
 

         More stories | Send us your story
Featured Videos
Gallery icon 
How do move a 13-ton Sphinx ?
Posted 7-3-2019 | 1 comment
A look at how the Sphinx of Ramses II was moved at Philadelphia's Penn Museum.
 
'Deleting' disease using CRISPR
Posted 6-15-2019 | 5 comments
A look at science's goal of eliminating genetic diseases using gene-editing techniques.
 
What happens when lava meets ice ?
Posted 5-18-2019 | 2 comments
This intriguing experiment reveals just what happens when you pour lava on to ice.
 
7 ghost stories from the Queen Mary
Posted 5-10-2019 | 2 comments
A look at some creepy tales of ghosts and hauntings from the retired ocean liner.
 
Could Jack have survived 'Titanic' ?
Posted 5-2-2019 | 9 comments
The MythBusters investigate whether or not both Jack and Rose could have survived the movie.
 
 View: More videos
 
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.712 Unexplained-Mysteries.com (c) 2001-2019
Terms   |   Privacy Policy   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ