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Zooming in on the very faint neutron star RX J1856.5–3754 Hubble image of RX J1856.5−3754—the first direct observation of an isolated neutron star in visible light. RX J1856.5−3754 is thought to have formed in a supernova explosion of its companion star about one million years ago and is moving across the sky at 108 km/s.
The documentary proposes a thought experiment in which a neutron star approaches Earth. Constant meteor storms are the first warning sign, and dramatic sequences depict widespread destruction and the deaths of thousands of people. Given seventy-five years to prepare, human society radically shifts toward the evacuation of Earth.
A neutron star is the ultra-compact remnant of a massive star which exploded as a supernova. Neutron stars have a mass bigger than the Sun , yet are only a few kilometers across. These extremely dense objects rotate on their axes , producing focused electromagnetic waves which sweep around the sky and briefly point toward Earth in a lighthouse ...
A neutron star is so dense that one teaspoon (5 milliliters) of its material would have a mass over 5.5 × 10 12 kg, about 900 times the mass of the Great Pyramid of Giza. [b] The entire mass of the Earth at neutron star density would fit into a sphere 305 m in diameter, about the size of the Arecibo Telescope.
Zooming to RX J1856.5−3754 which is one of the Magnificent Seven and, at a distance of about 400 light-years, the closest-known neutron star. Neutron stars are the collapsed cores of supergiant stars. [1] They are created as a result of supernovas and gravitational collapse, [2] and are the second-smallest and densest class of stellar objects ...
The Magnificent Seven is the informal name of a group of isolated young cooling neutron stars at a distance of 120 to 500 parsecs from Earth. [1] These objects are also known under the names XDINS (X-ray Dim Isolated Neutron Stars) or simply XINS. [2]
Artist's illustration of an 'isolated neutron star' -- one without associated supernova remnants or binary companions. A radio-quiet neutron star is a neutron star that does not seem to emit radio emissions, but is still visible to Earth through electromagnetic radiation at other parts of the spectrum, particularly X-rays and gamma rays.
SGR 1806−20 is a magnetar, a type of neutron star with a very powerful magnetic field, that was discovered in 1979 and identified as a soft gamma repeater.SGR 1806−20 is located about 13 kiloparsecs (42,000 light-years) [1] from Earth on the far side of the Milky Way in the constellation of Sagittarius.