Rymdprogrammen.

  • Posts: 103
  • Thank you received: 3

Rymdprogrammen. was created by sigurdV

Ja vad händer egentligen?
Georg Rajna kan få första ordet:
www.academia.edu/37545279/SpaceX_Mission_with_Astronauts

Contents

The Big Bang ........................................................................................................................... 7

First SpaceX mission with astronauts set for June 2019: NASA ............................................ 8

Observations challenge cosmological theories ....................................................................... 8

Six parameters explain the whole universe ......................................................................... 9

Dark energy

a constant? ................................................................................................... 9

Tracing the Universe: X-ray survey supports standard cosmological model ....................... 10

Researchers study a neutral hydrogen supershell in the Milky Way .................................... 13

Wave-particle interactions allow collision-free energy transfer in space plasma ................. 14

Plasma accelerators could overcome size limitations of Large Hadron Collider.................. 16

Swing ................................................................................................................................. 16

Host of applications ........................................................................................................... 18

Bigger impact ..................................................................................................................... 19

Work Begins on New SLAC facility for revolutionary accelerator science ........................... 19

Surfing the Plasma Wake .................................................................................................. 21

Fast Track to First Experiments......................................................................................... 22

Study develops a model enhancing particle beam efficiency ............................................... 23

Substitution of radioisotopes ............................................................................................. 25

New particle accelerators will probe how charged particles assume a new identity, or change 'flavor' .................................................................................................................................... 25

NOvA experiment sees strong evidence for antineutrino oscillation .................................... 26

PROSPECTing for antineutrinos ........................................................................................... 28

The secret to measuring an antineutrino's energy ................................................................ 30

A Missing Piece in the Neutrinoless Beta-Decay Puzzle ...................................................... 31

Synopsis: Neutron Decay May Hint at Dark Matter .............................................................. 32

Construction begins on one of the world's most sensitive dark matter experiments............ 33

An Ultracold Search 6,800 Feet Underground .................................................................. 34

A Strong Collaboration for Extraordinary Science............................................................. 36

Start of most sensitive search yet for dark matter axion ....................................................... 37

Dark matter: MACHOs, WIMPs or axions? ....................................................................... 38

Supercold amplifiers lower noise to absolute limit ............................................................ 39

Search for superlight dark matter particles heats up ............................................................ 39

Study suggests the elusive neutrino could make up a significant part of dark matter ......... 40

Hot versus cold .................................................................................................................. 41

Changing picture ................................................................................................................ 42

George är kanske lite akademisk och lite tung att läsa men han kan tas med ett visst allvar ... Och ibland är han inte så svår att förstå...

Astronomers have calculated that dark matter, while invisible, makes up about 85 percent of the mass of the universe.

The solidest evidence for its existence is the motion of stars inside galaxies: Without an unseen blob of dark matter, galaxies would fly apart. In some galaxies, the visible stars are so rare that dark matter makes up 99.9 percent of the mass of the galaxy.

Theorists first thought that this invisible matter was just normal matter too dim to see: failed stars called brown dwarfs, burned-out stars or black holes. Yet so-called massive compact halo objects - MACHOs - eluded discovery, and earlier this year a survey of the Andromeda galaxy by the Subaru Telescope basically ruled out any significant undiscovered population of black holes.

The researchers searched for black holes left over from the very early universe, so-called primordial black holes, by looking for sudden brightenings produced when they pass in front of background stars and act like a weak lens. They found exactly one - too few to contribute significantly to the mass of the galaxy


Searching for primordeal black holes in The Andromeda Galaxy?
And finding one...
We live in a Science Fiction tale or we live here on earth?
08 Oct 2018 10:11 #455

Please Log in or Create an account to join the conversation.

Moderators: Klamm
Time to create page: 0.593 seconds