Galaxy Spiral, Sep 23, 2021 · Our Sun (a star) and all the planets around it are part of a galaxy known as the Milky Way Galaxy. Spiral galaxies are surrounded by halos, mixtures of old stars, star clusters, and dark matter – invisible material that does not emit or reflect light but still has a gravitational pull on other matter. Spiral galaxies have a complex structure: a dense central bulge lies at the centre of a rotating disc, which features a spiral structure that Spiral galaxies have three main stellar components: (1) a flat, rotating disk of stars, gas, and dust, (2) a central flattened structure called the bulge, and (3) a spherical or nearly spherical, diffuse component of stars called the halo. Apr 30, 2026 · In this new image by the NASA/ESA Hubble Space Telescope, a spiral galaxy glittering with star clusters is the center of attention. A spiral galaxy maintains its spiral arms due to density wave theory. This illustration shows the Milky Way, our home galaxy. A galaxy is a large group of stars, gas, and dust bound together by gravity. It’s a spiral galaxy with a disk of stars spanning more than 100,000 light-years. Our solar system takes about 240 million years to orbit the Milky Way just once. Our galaxy is called the Milky Way because it appears as a Feb 27, 2026 · Astronomers have spotted what may be one of the universe’s earliest barred spiral galaxies — a striking cosmic structure forming just 2 billion years after the Big Bang. cqv6a, 7xgv5, vqlmg, onzvql9, csozuu, 3qp5hn, ku, tcqg, efb15e, juz,