This is a connection to Earth Defense: http://earthdefence1.blogspot.com/

Dark Matter: In astronomy and cosmology, dark matter is hypothetical matter that is undetectable by its emitted radiation, but whose presence can be inferred from gravitational effects on visible matter. Dark matter is postulated to explain the flat rotation curves of spiral galaxies and other evidence of "missing mass" in the universe.

A black hole: is a massive object whose gravitational field is so strong that it prevents any form of matter or light from escaping. Because a black hole absorbs all visible light it is in fact invisible to the un added eye. According to the American Astronomical Society, every large galaxy has a super massive black hole at its center.

Wormhole: is a theory that a black hole has two mouths. That a properly designed ship could go into one mouth then some how come out of the throat of the black holes.

Colliding Galaxies: Hubble Space Telescope, has captured pictures that suggests that two galaxies have actually collided with each other, with a violent wave of star-forming material ejected as a result. The colliding galaxies have created a ring, wave of star debris, shock wave, that moves outwards at about 200,000 miles per hour. The image above is an example of Two galaxies colliding.

A supernova (plural: supernovae) is a star explosion. Supernovae are extremely bright and cause an explosion of radiation that often briefly outshines an entire galaxy, before fading from view over several weeks or months. During this short period, a supernova can emit as much energy as the Sun could emit over its entire life span. The explosion expels much or all of a star's material at a velocity of up to a tenth the speed of light, driving a shock wave into the surrounding space, other solar systems etc. This shock wave creates an expanding wave of gas and dust called a supernova remnant. Supernova is cause by one of two ways, when a star runs out of energy some suddenly collapse, then releases all of its potential energy. The other way is runaway nuclear fusion. On average a supernovae happens every 50 years in a galaxy the size of the Milky Way

Life in our Galaxy
The three most likely supporters of life in the solar system (besides Earth) are the planet Mars, the Jovian moon Europa, and Saturn's moon Titan

The habitable zone: (HZ) in astronomy is a region of space where life is more probable to exist. There are two regions that must be favorable, one within a planetary system and the other within the galaxy. Planets and moons in these regions are the likeliest candidates to be habitable and thus capable of bearing extraterrestrial life similar to our own.
Astrobiology (other terms have been exobiology, exopaleontology, and bioastronomy) is the study of the origin, evolution, distribution, and future of life in the universe. This interdisciplinary field usually focuses on habitable environments in our Solar System and habitable planets outside our Solar System. Astrobiology is the search for prebiotic chemistry, life on Mars and other Solar bodies in the Universe, laboratory and field research into the origins and early evolution of life on Earth, and studies of the potential for life to adapt to challenges on Earth and in space. When looking for life on other planets, some simplifying assumptions are made to reduce the scope of the task. One is the theory that the vast majority of life forms in our galaxy are carbon based, as are all life forms on Earth. While it is possible that none carbon based life exists.

End of the Universe
Many religions have an end-of-the-universe prediction. The theological study of the ultimate fate of the universe and/or ultimate destiny of mankind is known as eschatology. Many religious beliefs are cataclysmic, and some theists do not view the various scientific theories about the end of the universe as contradicting their religious beliefs. Alternatively, many religions, particularly Hinduism, believe in an unending cycle of apocalyptic
destruction and re-creation.
Scientific Theory’s
False vacuum theory: Everything in the universe will be destroyed instantaneously, without any forewarning
Big Bounce theory: This theory predicts that once this universe collapses it will become a new universe in an event similar to the Big Bang. An explosion that started the universe and an explosion that ends the universe.
Big Freeze theory: States that the universe continues to expand and over many, many years planets and stars grow further and further apart, thus the Universe becomes a barren freeze.
Huge Black Hole theory: A theory that a black hole could become large enough to suck in all matter in the universe. Thus suck the entire universe in.