Bright green fireball lights up the skies over Portugal and Spain (photos)
Why a giant 'cold spot' in the cosmic microwave background has long perplexed astronomers
28 May 2024 (10 days away): Messier 4 is well placed
NASA-funded pulsed plasma rocket concept aims to send astronauts to Mars in 2 months
24 May 2024 (6 days away): The Moon at aphelion
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