the golden record images -Famous "Voyager 1" spacecraft was launched by NASA on September 5, 1977. Despite its primary missions (to study the outer Solar System and interstellar medium) the spacecraft had another – to send a message to other life forms in the universe.

the golden record images -Famous "Voyager 1" spacecraft was launched by NASA on September 5, 1977. Despite its primary missions (to study the outer Solar System and interstellar medium) the spacecraft had another – to send a message to other life forms in the universe.

Stars ~ Stars form in the densest regions of the interstellar medium, or ISM, called molecular clouds. The ISM is the name given to the gas and dust that exists between the stars within a galaxy. It is 99% gas and 1% dust, by mass. Molecular clouds are perfect star-forming regions because the combination of these atoms into molecules is much more likely in very dense regions.

Stars ~ Stars form in the densest regions of the interstellar medium, or ISM, called molecular clouds. The ISM is the name given to the gas and dust that exists between the stars within a galaxy. It is 99% gas and 1% dust, by mass. Molecular clouds are perfect star-forming regions because the combination of these atoms into molecules is much more likely in very dense regions.

Monday, Dec. 8, 2014: Stars form in textbook fashion inside emission nebula NGC 2174, where molecular clouds condense into star formation regions. New stars next slowly blow unused material back into the interstellar medium. After the lengthy process has almost concluded, the stars have broken out into the open.

Monday, Dec. 8, 2014: Stars form in textbook fashion inside emission nebula NGC 2174, where molecular clouds condense into star formation regions. New stars next slowly blow unused material back into the interstellar medium. After the lengthy process has almost concluded, the stars have broken out into the open.

Sh2-188, a planetary nebula, consists of a one-sided shell of material colliding with the interstellar medium, triggering shock wave structures. - Credit: Canada-France-Hawaii Telescope/Coelum

Sh2-188, a planetary nebula, consists of a one-sided shell of material colliding with the interstellar medium, triggering shock wave structures. - Credit: Canada-France-Hawaii Telescope/Coelum

The Smile Nebula (NGC 3199) is a bright emission nebula of about 75 light-years across, located some 11,736 light-years away in the southern constellation of Carina. It is created by the Wolf-Rayet star 18 (also known as HD 89358), blowing a strong stellar wind into the surrounding interstellar medium.

The Smile Nebula (NGC 3199) is a bright emission nebula of about 75 light-years across, located some 11,736 light-years away in the southern constellation of Carina. It is created by the Wolf-Rayet star 18 (also known as HD 89358), blowing a strong stellar wind into the surrounding interstellar medium.

Iris, the Stars Are Bright Pin It Credit: Canada-France-Hawaii Telescope/Coelum 11/3/14: The Iris Nebula, NGC 7023, lies 1,300 light-years away in the constellation Cepheus.

Iris, the Stars Are Bright Pin It Credit: Canada-France-Hawaii Telescope/Coelum 11/3/14: The Iris Nebula, NGC 7023, lies 1,300 light-years away in the constellation Cepheus.

The Voyager spacecraft discovered a sea of magnetic bubbles frothing up out where the solar system meets the interstellar medium

The Voyager spacecraft discovered a sea of magnetic bubbles frothing up out where the solar system meets the interstellar medium

When the most massive stars die, their outer layers, enriched with heavy elements from the result of nuclear fusion and neutron capture, are blown off into the interstellar medium, where they can help future generations of starsby providing them with the raw ingredients for rocky planets and, potentially, life.

When the most massive stars die, their outer layers, enriched with heavy elements from the result of nuclear fusion and neutron capture, are blown off into the interstellar medium, where they can help future generations of starsby providing them with the raw ingredients for rocky planets and, potentially, life.

Friday, Feb. 28, 2014: The glowing wisps of nebula NGC 6979 resulted from a supernova, the explosion of a massive star, over 5000 years ago. The ejected stellar gas continuously collides with gas and dust clouds of the surrounding interstellar medium, causing complex structures and colors. The nebula makes up part of the Cygnus Loop, along with Pickering's Triangular Wisp and the well-known Veil Nebula. Image released February 2014.%u2014 Tom Chao

Friday, Feb. 28, 2014: The glowing wisps of nebula NGC 6979 resulted from a supernova, the explosion of a massive star, over 5000 years ago. The ejected stellar gas continuously collides with gas and dust clouds of the surrounding interstellar medium, causing complex structures and colors. The nebula makes up part of the Cygnus Loop, along with Pickering's Triangular Wisp and the well-known Veil Nebula. Image released February 2014.%u2014 Tom Chao

NASA’s Astronomy Picture Of The Day: Supernova Remnant Puppis A

NASA’s Astronomy Picture Of The Day: Supernova Remnant Puppis A

Puppis A Puppis A is a supernova remnant located about light years away towards the constellation Puppis. It is about 10 light years across, and would have been seen by Earth around years...

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