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

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.

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

How to Confirm more than 100 exoplanets at once! Keck Observatory and K2 Mission Results

29th Sep, 2016 - 2.5k views

Joins us for live chat here: An extraordinary discovery of numerous exoplanets was made by combining NASA's K2 mission data with follow-up observations by ground-based telescopes including the W. M. Keck Observatory and

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

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

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

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.

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

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

The Curiosity of Martian Mud Cracks

23rd Feb, 2017 - 2.8k views

Here is a link to the press release we're talking about today: NASA's Curiosity rover certainly has uncovered unusual features of Mars. Recently the rover was used by scientists to take a closer loo

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

Monster Black Hole Gets Kicked out of Home Galaxy by Gravitational Wave

30th Mar, 2017 - 2.5k views

Watch this video to finish where this discussion got cut off: What happens if two black holes collide? Scientists have found evidence that such an event took place during the merging of two galaxies. The r