Sounds of the sun ‘Sun Sonification

The Sun is not silent. The low, pulsing hum of our star's heartbeat allows scientists to peer inside, revealing huge rivers of solar material flowing around before their eyes -- er, ears. NASA heliophysicist Alex Young explains how this simple sound connects us with the Sun and all the other stars in the universe.This piece … Continue reading Sounds of the sun ‘Sun Sonification

How Science Figured Out the Age of Earth

A few hundred thousand years after the Big Bang, the Universe cooled to the point where atoms could form. The age of the Earth is estimated to be 4.54 ± 0.05 billion  years (4.54 × 10 years ± 1%). This age may represent the age of the Earth's accretion, of core formation, or of the material from which the Earth formed. This dating … Continue reading How Science Figured Out the Age of Earth

Stars map

The Chinese Star Map (700 AD) is the oldest known manuscript atlas of the night sky. it shows more than 1,300 stars visible to the naked eye - centuries before the invention of the telescope. The Chinese star chart is the earliest known manuscript atlas of the night sky.  It was produced in central China … Continue reading Stars map