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Jumping Starlight

'Twinkle, twinkle, little star, how I wonder what you are,' says the song by Jane Taylor. But stars don’t really twinkle; their light reaches the earth in a steady way. Why then do we see them flicker ...

Does The Sun Go A Bit Wobbly?

Our Sun may seem an enduring, unwavering beacon in the sky, but in truth it has a 'heartbeat' of sorts--a pulsation between dimmer and brighter phases so slow that it only 'beats' 9 times each century ...
Using infrared technology, NASA
Nursery of Giants Captured in New Spitzer Image

Typically, the bigger something is the easier it is to find. Elephants, for example, are not hard to spot. But when it comes to the massive stars making up the stellar nursery called DR21, size does n ...

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