Simons Observatory small-aperture telescope

Astronomy & Observing News

Simons Observatory: Big Bang Examiner

In February, Sky & Telescope Contributing Editor Govert Schilling visited three new astronomical observatories in northern Chile. This chronicle of the Simons Observatory is the first of a three-part blog series.

dust polarization emission at galactic poles

Astronomy & Observing News

Dust Makes Cosmic Inflation Signal Iffy

A new analysis of Planck data bolsters the claim that the polarization signal heralded as evidence for cosmic inflation is from dust instead.

Planck map with cosmic infrared background

Astronomy & Observing News

Big Bang Inflation Evidence Inconclusive

New analyses suggest that observations heralded as evidence for the universe’s brief growth spurt don’t conclusively show what researchers thought they did.

B-mode discovery telescope

Astronomy & Observing News

Direct Evidence of Big Bang Inflation

Researchers with an experiment based at the South Pole have discovered the long-sought "smoking gun" for inflation. The signal was hidden in polarization patterns in the cosmic microwave background and confirms physicists' audacious theory of how the Big Bang happened.

Astronomy & Observing News

Planck: Best Map Yet of Cosmic Creation

Planck mission scientists have released the first half of their observations of the cosmic microwave background. The results are a stunning confirmation of today's standard model for how the universe formed and grew. But they also raise some head-scratchers.