Dark Energy

DES clinches the most precise cosmological results ever extracted from gravitational lensing

By: Mandeep S.S. Gill and Michael Baumer

Editors: Rachel Wolf, Ross Cawthon, Kathy Romer, Anthony Kremin

S8 vs. Omega_m plot, courtesy of the DES collaboration.

Standard Model of the Universe Withstands Most Precise Test by Dark Energy Survey

SLAC and Stanford astrophysicists made crucial contributions to the galaxy survey, showing that the universe clumps and expands as predicted by our best cosmological models.

Blanco Telescope and Milky Way. (Reidar Hahn/Fermi National Accelerator Laboratory.)

Get crackin’ and start SLAC-in’: SLAC tours are back in action!

By Kelly Stifter

The author (l) in the LZ lab. (Photo courtesy Kelly Stifter.)
The author (l) at work in the LZ lab with UMASS student Chris Nedlik. (Credit: Steffan Luitz.)

Ever wanted to learn about dark matter—the elusive particle that holds galaxies and galaxy clusters together? What about dark energy—the mysterious force that is causing our universe to expand at a continually increasing rate? If so, you’re in luck!

One side of the SLAC squished penny. (Credit: KIPAC.)

Latest measure of cosmic expansion hints that universe is growing faster than expected

by Lori Ann White

The universe is full of mysteries that merit an exclamation or two of wonder and delight. Black holes, supernova explosions, planets around other stars, the thought that most of the matter surrounding us is some kind of stuff that we can’t detect—these are just a few of the cosmic marvels that warrant a “Wow!” or a “Neat!” or a “Gee whiz!”

Or even a “Holy cow!”

One group of scientists has found a way to permanently remind themselves of this.

Strongly lensed quasar studied by the H0LiCOW collaboration. (Credit: ESA/Hubble, NASA, Suyu et al.)

What these students did for their summer vacation: 2016 undergraduate research at KIPAC!

by Lori Ann White

Some things just go together. Hot dogs and mustard, smart phones and selfies, school and summer vacation. But science is a year-round proposition, and several undergrads didn't seem to mind forgoing their summer vacations to pursue a variety of research opportunities with members of KIPAC. (Protip: it’s never too soon to start thinking about next summer!)

SULI students come to SLAC

Brett Harvey explains his research to Pat Burchat.

The Dark Energy Camera: a powerfully capable instrument for the modern era of massive cosmological surveys

By Kevin Reil

Star Trails

Of Galaxies, Stars, and Rainbows

The Highest Energies in the Universe


After a century of study, researchers still struggle to understand the origin of cosmic rays, particles with extreme energies that fill the Universe and bombard the Earth from all directions... On Tuesday at KIPAC@10, we asked: Where Did That Come From? and spent the morning talking about particle acceleration in the Universe. Afterwards, Luigi Tibaldo talked to Angela Olinto (KICP) and Neil Gehrels (NASA Goddard)