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Swirling around the planet’s equator, the rings of Saturn are a dead giveaway that the planet is spinning at a tilt. The belted giant rotates at a 26.7-degree angle relative to the plane in which it o...
On the evening of Dec. 12, 2021, Cornell astronomers Gordon Stacey and Thomas Nikola were dangerously short on time. They’d been awake for nearly 24 hours, with another all-nighter ahead of them.
Comet 67P/Churyomov-Gerasimenko – arguably the most-studied comet in history – has yielded a cosmic surprise: It emits molecular oxygen drawn from its nucleus.
Astronomers detect dark matter halo around ancient dwarf galaxy（图）
Astronomers detect dark matter halo ancient dwarf galaxy
2021/3/5
The Milky Way is surrounded by dozens of dwarf galaxies thought to be relics of the first galaxies in the universe. Among the most primitive of these galactic fossils is Tucana II -- an ultrafaint dwa...
Scientists have discovered an ancient lakebed deep beneath the Greenland ice（图）
Scientists ancient lakebed deep beneath Greenland ice
2020/11/20
Scientists have detected what they say are the sediments of a huge ancient lakebed sealed more than a mile beneath the ice of northwest Greenland -- the first-ever discovery of such a sub-glacial feat...
Scientists discover clues to ancient high sea level rise in Mallorcan cave（图）
Scientists ancient high sea level rise Mallorcan cave
2019/10/18
Scientists studying evidence preserved in a coastal cave have shown that more than three million years ago -- a time in which Earth was two to three degrees Celsius warmer than the pre-industrial era ...
The numerous streams in the M31 halo are currently assumed to be due to multiple minor mergers. Here we use the GADGET2 simulation code to test whether M31 could have experienced a major merger in its...
An ancient star in our galaxy's halo harbours isotopes of barium that shouldn't be there – at least according to our conventional understanding of nucleosynthesis. That's the conclusion of an internat...
Ancient Mars wetter than we thought（图）
Ancient Mars the planet's surface a frozen wasteland
2010/1/11
Early Martian history may have involved more water on the planet's surface than was previously thought. That is according to researchers in the UK who have identified a series of geological features o...
Relying on the Greek text related to Babylonian-Hellenic observations
of lunar eclipses in Ptolemy’s ”Almagest” (Halma M., 1813) and by analysing
some Arabian notes about solar and lunar eclipses – ...
Ancient calculator was 1,000 yrs ahead of its time
astronomi calcalculatormade X-ray tomography
2006/12/1
November 29, 2006，An ancient astronomical calculatormade at the end of the 2nd century BC was amazingly accurate and more complex than any instrument for thenext 1,000 years, scientists said on Wednes...