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Scientists have been able to recreate the extreme conditions found on icy moons in deep space—and revealed the unstable behavior of water.

An international team of astronomers reports the discovery of a new long-period radio transient, which received the designation ASKAP J144834−685644 (ASKAP J1448−6856 for short). The newfound transient is a crucial

Looking up at the night sky, it may seem our cosmic neighborhood is packed full of planets, stars and galaxies. But scientists have long suggested there may be far fewer

The swirling spiral galaxy in this NASA/ESA Hubble Space Telescope image is NGC 3285B, which resides 137 million light-years away in the constellation Hydra (the Water Snake). Hydra has the

In 2015, astronomer Tabetha Boyajian and colleagues announced the discovery of unusual light fluctuations coming from a star about 1,500 light-years away. It came to be known as “Tabby’s star”

The US space agency NASA will lose about 3,900 employees under Donald Trump’s sweeping effort to trim the federal workforce—at the same time as the president prioritizes plans for crewed

A rocket carrying carbon dioxide- and Earth-observing satellites successfully blasted off from South America late Friday.

It’s almost time for summer’s meteor shower duet.

A new study led by researchers from the Yunnan Observatories of the Chinese Academy of Sciences has developed a neural network-based method for large-scale celestial object classification, according to a

Just a short distance inland from the waves crashing against California’s shore, NASA’s Relativistic Electron Atmospheric Loss (REAL) CubeSat mission launched into the sky, taking off at 2:13 p.m. ET