First, a definition:
Neutrino – “a fundamental particle with no electric charge and very little mass, that escaped from the big bang nearly immediately.”¹
“The universe’s oldest light hasn’t made a pit stop for 13,820,000,000 years–beginning its journey just 380,000 years after the big bang. That light, the so-called cosmic microwave background (CMB), serves as a familiar hunting ground for astronomers who seek to understand the universe in its infancy…
For more use the DOOR.
…unfortunately, it also obscures what lies behind it: the first hundreds of thousand of years of the universe. Now astronomers think they have peeked beyond even the CMB by capturing evidence of neutrinos traveling since the cosmos was just a second old…
“[This] discovery ‘gives us a new window on the universe,’ says Lawrence M. Krauss, co-director of the Cosmology Initiative at Arizona State University…”²
[The advances in astronomy over the past dozen or so years or astronomical research have been staggering. For a Christian interpretation of what all this means, check out the several articles by astrophysicist Hugh Ross at Reasons To Believe at reasons.org.]
¹ This definition is from the source below.
² Shannon Hall (an unidentified contributor) of “The Big Bang’s Particle Glow,” Scientific American (December 2015).