SpaceTime with Stuart Gary Series 19 Episode 60 - First stars formed later than thought...

Sep 02, 2016, 11:43 AM

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Stuart here with the Show Notes for Spacetime Series 19 Episode 60:

*First stars formed later than previously thought New research has discovered that the first stars in the Universe began shining far later than previously thought. The findings – based on new data from the European Space Agency’s Planck satellite -- also indicate that these first generation stars were the only sources needed to re-ionize the entire universe – giving us the cosmos we see today.

*New study raising puzzling questions about galaxy evolution A new study charting the rise and fall of galaxies over 90 percent of cosmic history -- has discovered galactic diversity in the early universe was similar to what astronomers see today. The new findings raise some profound questions about galactic evolution – how could galaxies which appear old and no longer make stars – exist in such a young universe.

*Asteroid close encounter It’s been revealed that the Earth barely escaped being hit by an asteroid on Saturday. The 34 metre wide space rock flew past the Earth at a distance of just 84 thousand 619 kilometres – just hours after first being discovered.

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