A white hole is a hypothetical astronomical object that is the reverse of a black hole. While a black hole is known for its immense gravitational pull, which prevents anything, including light, from escaping its event horizon, a white hole is theorized to be a region of spacetime from which matter and energy can only emerge.
Astronomers catch fizzled-out gamma-ray burst from supernova
Here is a list of the most energetic events in the universe, arranged in order. Please note that the ordering of these events can vary depending on specific criteria used, such as total energy released, peak luminosity, or different types of radiation considered. The references provided should offer comprehensive information on each topic.
An area of outer space within a dense nebula in which gas and dust are contracting, resulting in the formation of new stars.
A stellar nursery refers to a region in interstellar space where new stars are born. These regions are characterized by dense concentrations of gas and dust, which provide the necessary materials for the formation of stars. Stellar nurseries are important cosmic environments where the process of star formation occurs, leading to the creation of individual stars, stellar clusters, and even entire galaxies.
The first interstellar object detected passing through the Solar System.
‘Oumuamua (pronounced oh-MOO-ah-MOO-ah) is a highly elongated, cigar-shaped object that became a topic of significant interest in the field of astronomy when it was discovered on October 19, 2017, by astronomers using the Pan-STARRS1 telescope in Hawaii.
Cosmic inflation is a theory of exponential expansion of space in the early universe, believed to have lasted from 1036 seconds to between 1033 and 1032 seconds after the Big Bang.
Inflation is a concept in cosmology that refers to a period of rapid expansion of the universe in its early stages. It is a theory proposed to explain several observed features of the universe, such as its overall homogeneity, isotropy, and the absence of certain types of relics.
To achieve the spatial distribution of stars in a Globular Cluster, as has been observed, a black hole fraction of 22% is necessary.
Globular clusters are fascinating astronomical objects composed of densely packed groups of stars. They are distinct from open clusters, which typically contain a few hundred stars, as globular clusters can host hundreds of thousands to millions of stars.
The Milky Way is the galaxy that includes the Solar System, with the name describing the galaxy’s appearance from Earth: a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye.
The Milky Way Galaxy is a barred spiral galaxy located in the Local Group of galaxies, which includes over 50 galaxies. It is estimated to be around 120,000 light-years in diameter and contains between 100 and 400 billion stars, with estimates currently leaning toward the higher end of that range. The galaxy is named after the milky appearance of the band of stars visible in the night sky, which is caused by the light from its stars and gas clouds.
The term zenith sometimes means the highest point, way, or level reached by a celestial body on its daily apparent path around a given point of observation.
The Zenith of the Sun is a term used in astronomy to refer to the highest point that the sun reaches in the sky during the day. This occurs when the sun is directly overhead, or at the highest point in its daily arc across the sky.