DeepSkyVideos

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October 31st, 2011

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2012

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M29 - Pants Cluster - Deep Sky Videos

October 15th, 2012

Messier 104 is an open cluster that is difficult to see due to intervening dust. Absent the dust it would likely be very bright as seen form Earth.

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M57 - Ring Nebula - Deep Sky Videos

October 8th, 2012

The ring nebula was once thought to be a sphere of matter discharged by its central star that was so thin that only the edges were visible. It is now thought to be truly ring shaped and oriented so we see through it from Earth.

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M67 - Where did the Sun come from? - Deep Sky Videos

October 3rd, 2012

The open cluster Messier 67 has been thoroughly studied because it looked liked the best candidate for the location where the star nearest and dearest to our hearts was formed; our sun Sol.

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M96 - Coffee Break Galaxy - Deep Sky Videos

September 11th, 2012

Spiral galaxy Messier 96 is a spiral galaxy that is clearly distorted probably by an interaction with a another large galaxy that passed nearby.

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M85 - Lenticular Galaxy - Deep Sky Videos

September 4th, 2012

Lenticular galaxies, such as Messier 85, often look like elliptical galaxies to us but they are disk shaped rather than spherical like the ellipticals. They are common in galaxy clusters where spiral galaxies are rare and rare outside the clusters where spirals are common. So astronomers think they are formed when a spiral galaxy encounter the gas cloud of a cluster and has its dust and gas, and hence spiral arms, stripped from it.

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M31 - Andromeda Galaxy - Deep Sky Videos

August 30th, 2012

The Andromeda Galaxy, Messier 31, shares the title of the largest galaxy in the Local Group with the Milky Way. It was key to astronomers' realization that the universe is larger than the Milky Way.

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M20 - Trifid Tebula - Deep Sky Videos

August 24th, 2012

The Trifid is a remarkable astronomical object of stars dust and gas because it presents three types of nebula; emission, reflection and absorption.

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M76 - Little Dumbbell Nebula - Deep Sky Videos

August 21st, 2012

The central star of the planetary nebula Messier 76 is quite rare. It is a white dwarf with a surface layer of carbon rather than hydrogen or helium. Apparently after its first expansion phase when it release most of it's remaining hydrogen creating the nebula it contracted and experienced a helium flash converting the helium to carbon and created a second nebula.

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M32 - Satellite Galaxy - Deep Sky Videos

July 30th, 2012

Messier 32 is an unusually compact dwarf elliptical galaxy. Astronomers thing it was once a larger spiral galaxy that lost its disk of stars to the Andromeda Galaxy leaving only the core behind.

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M97 - Owl Nebula or a Pokemon - Deep Sky Videos

July 25th, 2012

The Owl nebula is a shell of gas cast off from a star when it evolved into a red giant. This nebula is oriented relative to Earth so the geometry of the gas release is apparent to astronomers.

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Really, Really Old Spiral Galaxy - Deep Sky Videos

July 23rd, 2012

Galacy BX442 is a very old galaxy ten billion light years from earth. It resembles a grand design spiral galaxy but its spectra reveals it is far to turbulent. So the spiral structure is probably due to a passing or nearby companion galaxy.

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M35 - Motion of Stars - Deep Sky Videos

July 3rd, 2012

Astronomers recorded the positions of the stars in the open cluster Messier 35 for decades to track their motion and from that determine the mass of the cluster. Based on their measurement it does not contain much if any dark matter.

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M37 - Clusters of Stars - Deep Sky Videos

June 21st, 2012

Messier 37 is a typical open cluster of stars. But it is useful for demonstrating how to determine the age of a cluster.

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M45 - Seven Sisters or Pleiades - Deep Sky Videos

June 11th, 2012

The Pelieades is an open cluster of stars that is passing through a diffuse cloud and dust to create a reflection nebula visible in long exposure photographs. Although there are about a thousand stars in the cluster the seven brightest are easily visible with the naked eye for now as they will eventually explode as supernovae.

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M101 - Supernova and Pinwheel Galaxy - Deep Sky Videos

June 7th, 2012

The Pinwheel galaxy, M101, is a jumble of spiral arms thought to be produced by stars formed by compression waves propagating around the galaxy. It is also the site of the most recent type 1a supernova.

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Smashing into Andromeda (NEWS) - Deep Sky Videos

June 3rd, 2012

The first ever measurement of the proper motion of the Andromeda galaxy confirmed it is heading for a collision with the Mily Way in about four billion years.

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M4 - White Dwarfs - Deep Sky Videos

May 29th, 2012

Messiers 4 is a nearby globular cluster of very old stars many of which are white dwarfs. The dwarfs' were individually resolved by the Hubble Spce telescope and the oldest dated to about 12 billion years, consistent with the age of the universe.

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M110 - Andromeda's Companion - Deep Sky Videos

May 25th, 2012

M110 is a dwarf elliptical galaxy left over from the formation of M31 Andromeda galaxy which it now orbits. It is a late addition to the Messier catalog as Messier discovered it but didn't specifically catalog it.

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M77 - A Special Kind of Galaxy - Deep Sky Videos

May 17th, 2012

Messier 77 is a Seyfert galaxy meaning it has an active galactic nucleus with a large cloud of hot gas being absorbed by the central super massive black hole. That places it between the Milky Way with a mostly dormant nucleus and a quasar with an extremely active nucleus.

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M92 - Rare Earths in a Globular Cluster - Deep Sky Videos

May 16th, 2012

Paul shares a photo of comet Garradd, that happened to be near Messier 92, to show how much they look alike and why comet hunter Charles Messier was so annoyed by these nebulae that he cataloged all those he saw.

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M56 - Old & Not That Exciting - Deep Sky Videos

May 14th, 2012

Messier 56 is little studied globular cluster because it's difficult to observe being close to the galactic and one of the most distant. But it is known to be one of the oldest globular clusters, nearly as old as the Milky Way.

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M16 - Eagle Nebula and THAT amazing image - Deep Sky Videos

May 7th, 2012

The Eagle Nebula is on of the most beautiful objects in the sky (once you take a long exposure photograph of it). What is going on to make it so beautiful?

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M93 - Caroline Herschel - Deep Sky Videos

May 3rd, 2012

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M27 - Dumbbell Nebula and Biscuits - Deep Sky Videos

April 12th, 2012

The Dumbell Nebula resulted from a star shedding a large portion of it's outer surface as it evolved. That gas now glows from the light of the star.

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M53- Which way is up in space? - Deep Sky Videos

April 9th, 2012

Up and down are meaningful on Earth but make little sense in space. But what about North and south? How do astronomers determine direction?

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M13 - Alien Life - Deep Sky Videos

March 28th, 2012

In 1974 Human Kind used the Aracebo radio telescope to send a message to the Hercules globular cluster. With luck we'll hear and answer in about 50,000 years. But it's unlikely because globular clusters are not good place to live.

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The Star that Blew Up (News) - Deep Sky Videos

March 23rd, 2012

Astonomers have identified a red star in a Hubble Space Telescope image that generated the 2012 supernova in Messier 95.

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M33 - Triangulum Galaxy - Deep Sky Videos

March 5th, 2012

The Tirangulum galaxy, Messier 33, is a spiral galaxy with no central bulge. Astonomers believe that such galaxies do not have a central super massive black hole and have absorbed few if any small galaxies.

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M30 - More & More & More Stars - Deep Sky Videos

February 25th, 2012

As globular clusters age they evolve leading to a phenomenon called core collapse. Messier 30 seems to be well into this process.

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M34 - Open Cluster - Deep Sky Videos

February 13th, 2012

Messier 34 is one member of a group of nearby clusters of stars. It is classified as an open cluster because it formed rather recently and is too small for the star to stay together so they will gradually disperse.

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