Search results
Results from the WOW.Com Content Network
The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. The National Space Science Data Center (NSSDC) site has been known to host copyrighted content.
Diffuse nebulae can be divided into emission nebulae, reflection nebulae and dark nebulae. Visible light nebulae may be divided into emission nebulae, which emit spectral line radiation from excited or ionized gas (mostly ionized hydrogen ); [ 25 ] they are often called H II regions , H II referring to ionized hydrogen), and reflection nebulae ...
Bow-Tie Nebula: Planetary Nebula: 3.5 Cepheus: 11 C3 NGC 4236 Barred Spiral Galaxy: 7,000 Draco: 9.7 C4 NGC 7023: Iris Nebula: Open Cluster and Nebula: 1.4 Cepheus: 7 C5 IC 342: Hidden Galaxy [7] Spiral Galaxy: 10,000 Camelopardalis: 9 C6 NGC 6543: Cat's Eye Nebula: Planetary Nebula: 3 Draco: 9 C7 NGC 2403 Spiral Galaxy: 14,000 Camelopardalis ...
In 1864, the CN was expanded into the General Catalogue of Nebulae and Clusters of Stars (GC) by John Herschel (William's son). [5] The GC contained 5,079 entries. Later, a complementary edition of the catalog was published posthumously as the General Catalogue of 10,300 Multiple and Double Stars. The small "h" followed with the catalogue entry ...
The second mission of this video game requires players to build a space station. The object of Space Shuttle Project is to successfully launch and fly one of NASA's historic Space Shuttles as a shuttle commander. Gameplay is composed of several different types of missions, each broken up into short mini-games. [2]
The Sharpless catalog is a list of 313 H II regions (emission nebulae) intended to be comprehensive north of declination −27°. (It does include some nebulae south of that declination as well.) (It does include some nebulae south of that declination as well.)
NGC 6210, sometimes also known as the Turtle Nebula, [4] is a planetary nebula located in the constellation Hercules, approximately 5.4 ± 1.3 kly from the Sun. [2] It is positioned about 38° above the galactic plane at a vertical distance of about 3.3 kilolight-years (1 kpc) and thus has little extinction from intervening interstellar dust. [5]
Barnard 68 is a molecular cloud, dark absorption nebula or Bok globule, towards the southern constellation Ophiuchus and well within the Milky Way galaxy at a distance of about 125 parsecs (407 lightyears). [2]