Astrophysical Journal Letters

Neutron stars on the brink of collapse

When a massive star dies, its core contracts. In a supernova explosion, the star's outer layers are expelled, leaving behind an ultra-compact neutron star. For the first time, the LIGO and Virgo Observatories have recently ...

dateDec 05, 2017 in Astronomy
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Exoplanet has smothering stratosphere without water

A NASA-led team has found evidence that the oversized exoplanet WASP-18b is wrapped in a smothering stratosphere loaded with carbon monoxide and devoid of water. The findings come from a new analysis of observations made ...

dateNov 30, 2017 in Astronomy
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ALMA discovers cold dust around nearest star

The ALMA Observatory has detected dust around Proxima Centauri. These observations reveal the glow coming from cold dust in a region between one to four times as far from Proxima Centauri as the Earth is from the Sun. The ...

dateNov 03, 2017 in Astronomy
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The inner secrets of planets and stars

After a five-year, 1.74 billion-mile journey, NASA's Juno spacecraft entered Jupiter's orbit in July 2016, to begin its mission to collect data on the structure, atmosphere, and magnetic and gravitational fields of the mysterious ...

dateNov 02, 2017 in Space Exploration
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