Tag Archives: galaxy

How do we study the stars? – Yuan-Sen Ting

The city sky is, frankly, rather boring. If you look up at the patches of murk between buildings, you might be able to pick out The Big Dipper, or perhaps, Orion’s Belt. But hold on. Look at that murky patch again and hold our your thumb. How many stars do you think are behind it?… Read More »

Meet the Galaxies (and More…) – Part 1 – A Song About Astronomy

Swirling through Space are clusters of billions of stars Bound by gravity, some are close and some are far Collections of stars, gas and dust, Each grouping is unique These groups are known as galaxies Let’s see who we can meet They are Galaxies Traveling at great velocity Held together by gravity Cosmic Mysteries They… Read More »

Introductory Astronomy: Size Scale of the Milky Way

Size Scale of the Milky Way Galaxy. The Milky Way Galaxy is a collection of stars and interstellar gas and dust held together by gravitational forces. Our Sun and solar system of planets is just one of roughly 100 to 400 billion such solar systems in this galaxy. The Milky Way Galaxy is tremendous in… Read More »

Astronomers Find Vortex Around A Black Hole Spinning At 70% the Speed of Light

Black holes are going to kill you and everyone you love. Well, maybe. As one of the most powerful forces in the universe, black holes were originally believed to be a myth for centuries, and were only recently proven to in fact exist by modern science. Way back in 1687, Newton blew the mind of… Read More »

Deep Astronomy Channel Trailer

When we look up at the sky on a clear, dark night, we can see about three thousand stars. Most of them are in our galaxy the Milky Way, which contains over one hundred billion stars. Our galaxy is just one of one hundred billion in the universe. Astronomers estimate that there are, on average,… Read More »

Astronomers Discover Mystery Radio Signal From Another Galaxy

The date is 2001, and in the Australian outback a 64 meter radio telescope scans the sky for electromagnetic signals from deep space. With most of the electromagnetic energy in the universe being generated by stars and black holes, and outside of the visible light spectrum, the radio dish and the data it collects as… Read More »

How Gaia Changed Astronomy Forever | Space Time

The great advances in any science tend to come in sudden leaps April 25th of 2018 marks the beginning of just such a leap for much of astronomy. In the early hours of the morning the Gaia mission second data release dropped. Our understanding of our own galaxy will never be the same again. The… Read More »

Mapping the Galaxy with Radio Astronomy

[intro music] Behold, a photograph of our home galaxy, the Milky Way, in all of its glory. Just look at those spiral arms. But how was this photo taken? Down here on earth we’re stuck within the plane of our galaxy’s disk. This is why the Milky Way appears as a band in the night… Read More »

Astronomers Find Invisible Galaxies That Change Everything We Know About Science

Ok, so here’s some space 101 for you. You know what a planet is, right? You’re sitting on one at this moment in time. It’s Earth, your home. We are the third rock from the sun. The first is Mercury, ‘cos he’s closest to that energy giver, the Sun. Our family is called the Solar… Read More »