Videos from Afternoon Astronomy Coffee

Every week, in universities and institutions around the world, astronomers meet over coffee to discuss the latest research in space and astronomy. This is your chance to join in on Thursdays, 3pm ET.

Found 46 videos in "Afternoon Astronomy Coffee" category

Comet Swarms or Alien Megastructures? The Strange Variations of the Star KIC 8462852

12th Jan, 2017 - 6.9k views

A star with unusual changes in brightness was discovered the Kepler Mission Planet Hunters. This star is called KIC 8462852 or "Tabby’s star" and has strange irregular dips in brightness and also seemed to be getting fainter over the last 4 years.

The Nearest Earth-sized Planet Discovered Around Proxima Centauri

8th Sep, 2016 - 6.2k views

Live chat at Also ask questions here: ESO Press Release: Proxima Centauri, the closest star to the Sun, is about 4 light-years from the Solar System.

Dragonfly 44: A Mysterious Galaxy Made of Mostly Dark Matter

8th Dec, 2016 - 5.7k views

Hangout made possible by .SPACE Domains: If dark matter is, well, dark how can it be found? Remarkably, a team of astronomers found a galaxy made almost entirely of dark matter by using several powerful telescopes. The galaxy i

Latest Results from NASA's New Horizon Pluto Mission

27th Oct, 2016 - 4k views

NOTE: Due to the poor video quality, the audio portion has been posted on the TWiST Podcast Stream here: Here is a link to the graphics discussed: Apparentl

Unusual Hot Jupiters

9th Feb, 2017 - 3.9k views

Hot Jupiters are gas giant planets, somewhat similar to Saturn or Jupiter, but instead, they orbit very close to their host stars with orbital periods of less than 10 days. Because these planets are very near their parent star, they are heated to ext

One of the Fastest Spinning Black Holes Discovered!

26th Jan, 2017 - 3.8k views

Black holes come in a variety of sizes from supermassive masses in galaxies to the mass of a single star. Objects even with stellar masses often emit X-rays and other radiation. The radiation comes from material near the black hole such as an accre

A Gamma Ray Binary in Another Galaxy: A massive object paired with a crushed stellar core remnant

10th Nov, 2016 - 3.4k views

Download all visuals here: A search for binary stars that emit gamma-rays using NASA’s Fermi satellite turned up a luminous object in another galaxy. These objects are characteristically variable. Using additional telescopes

Why Are Distant Galaxies Aligned?

29th Jun, 2017 - 3.4k views

The Hubble Space Telescope has observed massive, ancient galaxies in alignment in the distant universe. What is the significance of this alignment and why do these distant galaxies do that? We think that galaxies are scattered in the universe wit

The Freezing of Io's Atmosphere During Eclipses of the Sun by Jupiter

22nd Sep, 2016 - 3.2k views

Io is a moon of Jupiter which is volcanically active and, in fact, is the most active object in the solar system. This strong volcanism is stimulated by the gravitational interaction between Io and Jupiter. Not only that, Io’s volcanoes emit plumes

The Search for Planet 9: So, where is it? (audio remix)

11th May, 2018 - 3.1k views

Astronomers believe there is an undiscovered super-Earth Sized planet lurking in our outer solar system. If it exists, then astronomers think it would have an estimated mass of ten Earths. So, where is it?

Fast Moving Stars and Interstellar Bow Shocks

9th Mar, 2017 - 3k views

Sometimes individual stars in our galaxy are seen to be zipping through space. The winds from the stars ram into the interstellar medium -- the material between the stars in our galaxy -- and a bow shock is formed. In general they have the appearance

Stars Forming Precariously Close to the Galaxy's Supermassive Black Hole!

14th Dec, 2017 - 2.8k views

The environment around a supermassive black hole at the centers of galaxies are turbulent and dangerous places for stars to reside. Surprisingly, it appears that stars can survive and actually be formed near a super massive black hole despite the