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This article is a list of notable unsolved problems in astronomy. Problems may be theoretical or experimental. Theoretical problems result from inability of current theories to explain observed phenomena or experimental results. Experimental problems result from inability to test or investigate a proposed theory.
The Atacama Large Millimeter/submillimeter Array (ALMA) interferometer detected a strange object that appears to only be emitting microwaves near the Milky Way’s center. Now, a new study ...
Lost Cosmonauts. The Lost Cosmonauts or Phantom Cosmonauts are subjects of a conspiracy theory, which alleges that Soviet and Russian space authorities have concealed the deaths of some cosmonauts in outer space. Proponents of the Lost Cosmonauts theory argue that the Soviet Union attempted to launch human spaceflights before Yuri Gagarin 's ...
Boötes Void. The Boötes Void (/ boʊˈoʊtiːz / boh-OH-teez) (colloquially referred to as the Great Nothing) [1] is an approximately spherical region of space found in the vicinity of the constellation Boötes, containing only 60 galaxies instead of the 2,000 that should be expected from an area this large, hence its name.
NASA said the pulsing sound was the result of feedback on the speakers. It's the latest in a saga that unexpectedly kept two astronauts in space since June. On Saturday, NASA astronaut Butch ...
The most common type of planet found around Sun-like stars in our universe is the sub-Neptune—a planet that sits in size between Earth and Neptune, and typically has a pretty thick atmosphere.
Interstellar object. An interstellar object is an astronomical object (such as an asteroid, a comet, or a rogue planet, but not a star or stellar remnant) in interstellar space that is not gravitationally bound to a star. This term can also be applied to an object that is on an interstellar trajectory but is temporarily passing close to a star ...
Scientists expected the James Webb Space Telescope to reveal unknowns in the deepest realms of space.But they certainly didn't anticipate this. While scanning a region of the cosmos near the Big ...