Rare 'firework morphology' of supernova remnant Pa 30 may be due to white dwarf wind

In 1181 AD, a bright "guest star" was observed to linger in the sky for around six months. Nearly 850 years later, the likely ...
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Metal credit cards are a status symbol — here are 4 that you can qualify for with good credit

Terms apply to American Express benefits and offers. Visit americanexpress.com to learn more. Before there was a metal card at virtually every price point, there was the invitation-only American ...