Experience the wonders of space with our comprehensive astronomy website. From stunning images captured by telescopes to informative articles on celestial phenomena, join us as we unravel the mysteries of our vast universe.
Determining latitude using star observations. How can we calculate geographical coordinates using stars? Assuming you are familiar with geographical coordinates and that the altitude of the North Star above the horizon is roughly equal to the latitude of the observation location. To be precise, the North Star is not exactly at the North Pole, but…
An astronomical unit (au or AU) serves as a unit of measurement that approximates the distance between the Earth and the Sun. This distance is roughly equal to 150 million kilometers (93 million miles) or about 8.31 light minutes. The actual value of the astronomical unit varies throughout the year as the Earth orbits around…
Solar time refers to the measurement of the position of the Sun in relation to its culmination point, which is expressed in fractions of true solar days (including hours, minutes, and seconds). In order to calculate true solar time, one must consider the hour angle of the Sun’s center and add 12 hours to it….
The celestial body The cluster of stars known as Taurus, found to the northwest of Orion’s belt, is one of the constellations in the zodiac. It can be observed in the night sky between Aries and Gemini. Currently, scientists have extensively researched this group of stars and have accumulated numerous intriguing details about Taurus through…
Upon viewing this instructional video, you will acquire knowledge regarding the Earth’s form and dimensions. You will familiarize yourself with the methodology of triangulation for gauging the length of the meridian arc. Additionally, we will explore the concept of horizontal parallax and angular radius of a celestial object, and discover their utility in ascertaining the…
Imagine yourself in the southern part of Russia, where the nights are perpetually dark. In this mesmerizing setting, one can easily become captivated by the vastness of the starry sky. Particularly on moonless nights, when the air is still and clear, the eye can behold an enchanting spectacle of stars scattered across the heavens. These…
Valery Viktorovich Ryumin, a two-time Hero of the Soviet Union, had the unique opportunity to witness the beauty of Earth from the window of a spacecraft not just once, but four times. Throughout his illustrious career, he had the privilege of being a part of both Soviet and international space crews. Revered by his fellow…
The Sun, the central star of our solar system, is known for orbiting in various paths around which all the planets revolve. It has been around for approximately 5 billion years and is classified as a yellow dwarf, meaning it is relatively small in size. Unlike other stars, the Sun’s thermonuclear reactions occur at a…
The original article on the Eagle Constellation contains numerous illustrations implemented with the help of JavaScript, which may not be visible on certain devices. However, this page provides all the images for your viewing pleasure. Schematic of Figure 1.Aql. The constellation Eagle is depicted in the image above. The Eagle constellation, also known as Aquila,…
Stars are enormous celestial bodies composed of plasma that are held together by the force of gravity. As you might be aware, the Sun is the closest star to Earth and is located at the center of our solar system. With a diameter of approximately 1,392,684 kilometers, the Sun is relatively small when compared to…
It is never considered by us that there might be life forms existing beyond our own planet, beyond our own solar system. It is a possibility that there could be life on certain planets revolving around a star that is colored blue, white, red, or perhaps even yellow. Conceivably, there could be another planet similar…
Throughout history, humanity has held a deep fascination with the celestial realm. Gazing up at the night sky unaided reveals a luminous strip comprised of countless stars and interstellar matter. This celestial strip has been referred to as the Milky Way since ancient times. Our home is the Milky Way galaxy Materials that are connected…
Currently, there are additional combined discounts (ranging from 2% to 25%) accessible to 58,742 educational establishments. To ascertain the applicable discount for all staff members at your educational institution, kindly sign in to your personal Infoworks account. Advanced training program Role of the class teacher in accordance with the Federal State Educational Standards in today’s…
The Equatorial Coordinate System: An Introduction In astronomy, the equatorial coordinate system is commonly used to locate celestial objects in the sky. It is based on the concept of spherical coordinates, where the Earth’s equator serves as the fundamental plane. The Celestial Equator: A Projection of Earth’s Equator To establish the celestial equator, we project…
Astronomy holds the title of being the oldest scientific discipline that explores the organization of the universe. Its name originates from the Greek words astron (stars) and nomos (law), which together mean “stellar law”. Throughout history, astronomy has maintained a remarkable level of advancement, especially during ancient times. Interconnection between astronomy and other fields of…
In the middle of the 18th century, the English geologist John Michell brought attention to the potential presence of black holes in the universe. Michell hypothesized that if a star possessed the same density as the Sun but was 500 times smaller in size, its first cosmic velocity would surpass the speed of light. As…
Astronauts are constantly present on the International Space Station all year round. Recently, Oleg Novitsky and Pyotr Dubrov were dispatched from Russia to orbit the Earth. They departed from the planet a couple of months ago and are scheduled for a significant spacewalk on June 2. At 8:40 Moscow time, the Russian astronauts will venture…
Astrometry serves as the foundation for astronomical observations and the measurement of coordinates and time. The primary objective of astrometry is to establish a reference frame, which corresponds to the inertial reference frame described in Newton’s first law. Throughout history, astronomers have compiled star catalogs to achieve this goal. These catalogs have enabled the discovery…
Astronomy is the specific discipline that investigates the Sun and other celestial bodies, including the planets within our solar system and their moons, exoplanets, asteroids, comets, meteoroids, interplanetary matter, interstellar matter, pulsars, black holes, nebulae, galaxies and their clusters, quasars, and much more. Related topics References in literature Continuation of related topics Observing and detecting…
Experience the interactive scale of the Universe online: explore the actual dimensions of the universe, compare space objects, planets, stars, clusters, galaxies. When we talk about dimensions, we often refer to alternate realities or our perception of the world around us. However, there’s much more to dimensions than meets the eye. And perhaps the most…