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Orion Constellation’s shoulder, composed of the red supergiant Betelgeuse, one of the brightest stars in the sky, underwent one of the most prominent brightness variations ever recorded in modern astronomy history at the end of 2019. During this event, known as the “Great Dimming,” the star’s brightness dropped below its normal level, becoming noticeably darker to the naked eye. This process, which began in late 2019 and lasted into early 2020, sparked global speculation that the star might be a

Kepler-20e, Sun is an exoplanet discovered by the Kepler Space Telescope outside our solar system. It orbits the Kepler-20 star system, located approximately 950 light years from World. It was announced on 20 December 2011 by the Kepler science team.Discovery and Significance:The discovery of Kepler-20e is significant because it is one of the first Earth-sized planets found outside the Solar System. It was detected using the Kepler telescope’s transit method. This discovery provided important ev

A black dwarf is a hypothetical celestial object that emerges in the final stage of a star’s life. In reality, black dwarfs are the end result of white dwarfs that have completely cooled and no longer emit any light. They are therefore extremely aged stars that have lost all their energy.But do not worry—no black dwarfs have yet formed in the universe! This is because it takes trillions of years for a star to evolve into a black dwarf.How Do Black Dwarfs Form?Stars are born, live, and die. Stars

In space, the distances between stars, planets, and galaxies are so vast that measuring them in kilometers becomes extremely difficult. For this reason, scientists use a unit called the light-year. Let’s learn together what a light-year is!What Does Light-Year Mean?Light is the fastest thing in the universe, traveling through vacuum at exactly 300,000 kilometers per second. This is millions of times faster than the speed of a car or an airplane! A light-year is the distance that light travels in

The first object identified as originating from outside the Solar System, 'Oumuamua, was discovered on 19 October 2017 by the Pan-STARRS1 telescope affiliated with the University of Hawaii. This celestial body, recorded in scientific literature as 1I/2017 U1, derives its name from the Hawaiian phrase meaning “the first distant messenger.” The object entered the Solar System on a hyperbolic trajectory and exhibited physical and dynamical characteristics simultaneously resembling those of both an

Neptune is the eighth and farthest planet from the Sun in the Sun System, orbiting at an average distance of 2.8 billion mile (4.5 billion kilometers). Located at a distance of 30 astronomical units (AU), this planet was discovered in 1846 by Johann Gottfried Galle, following calculations by French mathematician Urbain Le Verrier.Neptune is the only planet not visible to the naked eye and is notable for its bluish color. This color arises from methane gas in its atmosphere absorbing red light an

Stellar evolution is one of the fundamental work areas of astrophysics and holds great importance significance for understanding the formation, galaxy dynamics, and cosmological processes of chemical elements in the universe. This process encompasses the physical and chemical transformations a star undergoes from its birth through its life cycle to its final stage. A star’s mass is the most critical factor determining its evolutionary path.Star FormationStars form in cold, dense regions of gas a

The Sun is a giant ball of gas that rises in the sky every morning and provides us with light and heat. But in fact, the Sun is a star! This type, known as a "dwarf star", is just one among billions of stars in the sky. Without the Sun, our Earth and other planets would be dark and freezing. In short, there would be no life without the Sun!📏 How Big Is the Sun?The Sun’s diameter is approximately 1,400,000 kilometers! That is equal to exactly 109 Earth diameters.It would take one million Earths

White dwarf is the remnant of a medium- or low-mass star similar to the Sun, formed in the final stage of its life cycle. These stars, after exhausting the hydrogen fuel in their cores, enter the red giant phase and expel their outer layers into space, forming a planetary nebula. The remaining hot core is called a white dwarf, and nuclear fusion no longer occurs (NASA, n.d.). It is predicted that our Sun will also transform into a white dwarf in approximately 7 billion years (Atlas, 2023). Durin

Lemmon Comet is one of the comets observed within Solar System and visible from Earth at specific intervals with the naked eye or through telescopes. Named after the observatory where its discovery was made, the Lemmon Comet has attracted the attention of both amateur and professional astronomers' observers due to its bright nucleus and prominent tail. It has been observed from various countries at different times and featured in the press and scientific-popular publications.Image of the Lemmon