This review provides useful background and information on how we find, vet and compile Planetary Nebulae (PNe) candidates and verify them. It presents a summary of the known Galactic PNe population and their curation in the Hong Kong/AAO/Strasbourg/H伪 PNe catalogue, "HASH"...
How did the solar system form? Who discovered planetary nebulae? How are Jovian planets formed? Who discovered the terrestrial planets? When were terrestrial planets discovered? How was Charon discovered? How have Kepler's laws been used in past discoveries?
Planetary nebulae are the remains of sunlike stars that have reached the end of their red giant stage. Photo courtesy of NASA Sun-Earth Day 2010 The sun has been shining for about 4.5 billion years [source: NASA]. The size of the sun is a balance between the outward pressure ...
Shapely was involved in a great debate about the nature of spiral nebulae (faint patches of light visible in the night sky). He believed that they were "island universes," or galaxies outside the Milky Way. Another astronomer, Heber Curtis, believed that spiral nebulae were part of the Milk...
Could our Sun end its life looking like the planetary nebula NGC 678? Astronomers suspect that it may well do so.ESO High-mass stars, however, are different from the Sun in many ways. They live short lives and leave behind gorgeous remains. When they will explode as supernovae, they bla...
s not all. It’s well worth investigating further and learning more about all the different deep sky objects waiting to be found.22There are many other multiple stars and nebulae visible throughout the year, not to mention open star clusters, globular star clusters, planetary nebulae and even...
Imagine the amazing vistas of star fields and nebulae you get with that! The design incorporates 6 or 7 elements, all coated with special chemicals to increase the amount of light that travels through the eyepiece. The downside to some of these eyepieces is their weight, which may require yo...
Generally, refractors are good for lunar and planetary observing, while reflectors are good for deep-sky observing. Compound telescopes are good general observing instruments. You should also consider where you will do most of your observing: light-polluted urban skies - compound telescopes and refr...
and these were made available for later solar system and planetary formation by planetary nebulae and supernovae, which blast these elements into space. The high abundance of oxygen, silicon, and iron on Earth reflects their common production in such stars. While most elements are generally stable...
Supernovae leave their mark on the skies as nebulae, clouds of solar debris that make for many of the most iconic astronomical images ever captured. Supernovae can give birth to black holes and neutron stars, and their light can be observed from thousands of light years away. Advertisement ...