资讯
10 小时
Space.com on MSNAstronomers trace mysterious blast of X-rays to 'Die Hard' star that refuses to perish (video)Astronomers have traced a mysterious blast of X-rays to a star that, like a cosmic action hero, just refused to die.
Hollow atoms are special atoms with multiple missing electrons in their inner shells, while their outer shells are still ...
Now, let’s take a closer look at X-rays. This technology has been around much longer than MRI. It dates back to the late 1800s. For quite some time, it was the only non-invasive way for doctors to ...
A new analysis of BL Lacertae by NASA’s Imaging X-ray Polarimetry Explorer sheds light on the emission mechanisms of active ...
An international team of astrophysicists have uncovered a possible origin of fast X-ray transients (FXTs) — mysterious, ...
What new methods can be developed in the search for extraterrestrial intelligence (SETI)? This is what a recent white paper ...
We report the direct generation of high-power and large-energy dissipative soliton resonance square pulses at 1940.8 nm from a compact mode-locked Tm-doped all-fiber laser. A fiber loop mirror of ...
NASA has released a breathtaking new image of the Andromeda Galaxy, our closest galactic neighbor. Also known as Messier 31, or M31, Andromeda is located about 2.5 million light-years from Earth.
The discovery marks the most distant mini halo ever found, doubling the distance of any previously known example. It offers ...
A newly discovered radio halo, 10 billion light-years away, reveals that galaxy clusters in the early universe were already steeped in high-energy particles. The finding hints at ancient black hole ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果