Astronomers recently spotted seven galaxies that appeared around 13.1 billion years ago – 700 million years after the Big Bang. Where the galaxies came from initially confused the experts because they seemed to appear almost out of nowhere, very rapidly. But now the team behind the observations suggest the previously hidden cluster of stars appeared when a cosmic ‘fog’ cleared.
More than 12.5 billion light-years away is a galactic powerhouse, a galaxy that is producing stars at nearly 1,000 times fasters than our own Milky Way.
A team of researchers led by Michele Fumagalli from the Extragalactic Astronomy Group and the Institute for Computational Cosmology at Durham Univ., were among the first to use ESO’s Multi Unit Spectroscopic Explorer (MUSE) instrument on the VLT.
A galaxy is a massive, gravitationally bound system that consists of stars and stellar remnants, an interstellar medium of gas and dust. Examples of galaxies range from dwarfs with as few as ten million stars to giants with a hundred trillion stars, each orbiting their galaxy’s own center of mass. So, here are 25 interesting facts about galaxies.
Nestled in the heart of a tiny galaxy 54 million light years from Earth is a black hole so big it makes up 15% of the star cluster’s total mass.
Disk galaxies or spiral galaxies are a type of galaxies which were first discovered by the American astronomer Edwin Hubble. Spiral galaxies are flat and disk-shaped. They contain stars, dust, asteroids and gas and serve as a residence to a group of stars located in the center of the galaxy. This center is known as the bulge.
Many of the oldest and most massive galaxies reside together in enormous structures known as clusters, and now a team of astronomers has confirmed the existence of an unusually distant galaxy cluster – a group of 19 galaxies located at precisely the same distance of 9.9 billion light years.
Everyone has seen pictures of galaxies in their elementary school science books, but what you might not know is that not all galaxies are created equal. In fact, some of them are downright bizarre-looking. While the Milky Way may look pristine and almost flawless, the following galaxies are the poor, snaggle-toothed children of the cosmos.
Over the past decade, we have come to appreciate that essentially every normal galaxy, including our Milky Way, harbors a supermassive black hole at its center. These monsters play an important role in the evolution of galaxies and the appearance of the observable universe, but their origin is largely unknown.
A star cluster has broken away from a galaxy and is hurtling in the direction of Earth at more than 2,000,000mph, US astronomers have discovered. The Harvard-Smithsonian Center for Astrophysics discovered the hypervelocity cluster, named HVGC-1, by chance and have no idea why it was catapulted out of galaxy M87.