and the Lagoon Nebula (Messier 8) high in the sky with a telescope, and you might even spot June Boötids meteors as that minor shower peaks around June 27th each year. Those are plenty of great ...

Sigma 8 (σ 8), a metric that measures the amplitude of matter density fluctuations, is a key factor, Kim says, and lower values of σ 8 indicate less clumping than expected, which could mean that ...