Milky Way is the galaxy that includes the Solar System, with the name describing the galaxy's appearance from Earth.The Milky Way is visible as a hazy band of white light, some 30° wide, arching the night sky.
Aristotle himself believed that the Milky Way was part of the Earth's upper atmosphere, along with the stars, and that it was a byproduct of stars burning that did not dissipate.He said that the milky appearance of the Milky Way Galaxy is due to the refraction of the Earth's atmosphere.
Neoplatonist philosopher Olympiodorus the Younger criticized this view, arguing that if the Milky Way were sublunary, it should appear different at different times and places on Earth, and that it should have parallax, which it does not. In his view, the Milky Way is celestial.
"Among the stars so bright, in the dark of night, the galaxy's light is a wondrous sight."
Andromeda also known as Messier 31, is a spiral galaxy located about 2.5 million light years away. It is thought that the Milky Way and Andromeda will collide several billion years merging to potentially form a giant elliptical galaxy[15] or a large lenticular galaxy.
The Andromeda Galaxy is the nearest major galaxy to our own. We do have closer neighbor galaxies, but they are much smaller.Two of them, the Magellanic Clouds, can be seen with the naked eye from Earth's southern hemisphere. They look like detached scraps of the Milky Way.
Star charts of that period labeled it as the Little Cloud.[21] In 1612, the German astronomer Simon Marius gave an early description of the Andromeda Galaxy based on telescopic observations
Cigar galaxy shines brightly at infrared wavelengths and is remarkable for its star formation activity.
The Cigar galaxy experiences gravitational interactions with its galactic neighbor, M81, causing it to have an extraordinarily high rate of star formation — astarburst.
In November 2023, a gamma-ray burst was observed in M82, which was determined to have come from a magnetar, the first such event detected outside the Milky Way(and only the fourth such event ever detected).
It is also called the 'Cigar Galaxy' because of the elongated elliptical shape produced by the tilt of its starry disk relative to our line of sight.Throughout the galaxy's center, young stars are being born 10 times faster than they are inside the entire Milky Way Galaxy
Pinwheel Galaxy also known as M101, is a spiral galaxy that measures 170,000 lightyears across and is located 25 million lightyears away from Earth in the Ursa Major constellation.
The galaxy is about twice the diameter of our own galaxy the Milky Way and is thought to contain about 1 trillion stars.the discoverer of the galaxy, described it as a "nebula without star
Spiral galaxies have multiple arms that extend from the central bulge and appear as spirals because of their rotation.It has a disk mass on the order of 100 billion solar masses, along with a small central bulge of about 3 billion solar masses
Whirlpool Galaxy these arms serve an important purpose: they are star-formation factories, compressing hydrogen gas and creating clusters of new stars.
The graceful, winding arms of the majestic spiral galaxy M51 appear like a grand spiral staircase sweeping through space.
The whirlpool, like many other galaxies, has a supermassive black hole at its heart, surrounded by rings of dust. The core of the galaxy is quite quite active — making the Whirlpool what astronomers call a “Seyfert galaxy”.
About Us
The universe is vast and incredibly complex, encompassing all of space, time, matter, and energy. It began with the Big Bang approximately 13.8 billion years ago and has been expanding ever since.
Among the most captivating is dark matter, an invisible substance that makes up about 27% of the universe. Unlike normal matter, dark matter does not emit, absorb, or reflect light, making it detectable only through its gravitational effects.
Dark matter and dark energy make up most of the universe's mass-energy content, influencing its structure and evolution. Despite significant advancements in cosmology, many mysteries about the universe remain unsolved, driving ongoing scientific exploration and discovery.
