Once I wanted to study astronomy, eventually I chose computer science, but my strong interest in astronomy, despite many years left. A few years ago I bought even a large reflecting telescope (Newtonian reflector). Since the primary school I still updated my knowledge concerning astronomy, but for some time some theories started raising my doubts, such as pulsars and neutron stars, and more specifically explanations what they are. Rotation period of pulsars may be about one-hundredth of a second but for example PSR J1748-2446ad (after Wikipedia) at 716 Hz (period being 0.00139595482(6) seconds) what gives at its equator it is spinning at approximately 24% of the speed of light, or over 70,000 km per second !!! (See neutron star on movie below.) How gravity can keep it in a pile? So astrophysicists devised that such stars are composed almost entirely of neutrons, and even more strange matter... What about knowledge from chemistry, islands of stability, the problem is that while neutrons are bound in nuclei are stable, free neutrons are unstable. Another question is whether even such strange matter is able to hold so quickly rotating altogether the star? Gravity is very weak force, if I remember correctly electromagnetic forces are 10^39 times stronger than gravity (!!!) but cosmologists almost ignore these effects, I mean electromagnetic forces, in their theories and focus mainly on the very weak gravity forces, what is difficult to understand for me. The theory of Electric Universe is among others being researched in the framework of Thunderbolt Project ( http://www.thunderbolts.info/wp/ ). In the begining of that project was also observation that many myths, artefacts like petroglyphs suggest that the sky in the distant past probably looked differently than at present. It a little bit corresponds to the controversial theory of Immanuel Velikovsky, author of the book "Worlds in collision": (http://www.youtube.com/watch?v=ZjEC1vOIuxY). The ancient roots inspiring theory of Electric Universe are presented by David Talbot you can see here: http://www.youtube.com/watch?v=uwMDYNRZUKY (it is part 1, look the other). Very interesting lecture on electric Universe theory by Wallace Thornhill is here: Part 1: http://www.youtube.com/watch?v=hzVocfmTyGM
Part 2: http://www.youtube.com/watch?v=bc4-3BB3j6Q . It should be added that plasma constitutes the majority of the matter of the universe, according to some sources, up to 99% (!) of the matter in the universe, after all achievements of the plasma physics aren't being taken into consideration in traditional cosmology. More information, please read below:
Credit: NASA/CXC/PSU/G.Pavlov et al. (Wikimedia Commons)
Here is an ANIMATION: VELA PULSAR ( Autor: NASA/CXC/Univ. of Toronto/M. Durant, et al. )
This is Vela pulsar movie by NASA Chandra X-ray observatory via Wikimedia Commons
According to the theory of Electric Universe for Sun glare is the responsibility of cosmic energy, electricity coming from space, not thermonuclear fusion. In this theory Sun and other stars play role of anode emiting positively charged particles, among others, protons, and stream coming from universe playing the role of cathode, radiating towards our solar system and the Sun the stream of electrons. It explains many of anomalies observed at Sun, as eg. black spots and umbra, very high temperature of corona nad relatively low of photosphere, acceleration of solar wind and poor convection on Sun. The darkness of Sun spoth is traditionally explained by lower temperature. How is it possible that this relatively more deeper part of Sun than photosphere has lower temperature? Reasoning logically closer to the "stove" it should be more warmly not more coldly. In practice, by spots we look into the deeper layers of the Sun and logically reasoning there should there be hotter rather than more coldly. Similarly, the farther from the Sun it should be more coldly, but it is not! Corona, being far from photosphere, is having a temperature of the row of 1-2 million(s) K.
More information on Electric Sun theory you can see inter alia here:
On Sun convection: http://www.youtube.com/watch?v=3jhFTZ8tLxo
Filamants in the universe
The gravity is rather poorly explaining such structures, similarly it is possible to await gas is behaving differently in vacuo. Is not that like filaments typical for plasma ball (the decorative gadget)? Plasma makes up most of the matter in the universe, conduct electricity very well, and only electricity gives rise to the electromagnetic field.
Until now, a theory that comets are simply such dirty snowballs (light snows) is wide spread in astronomy, which when will approach the Sun are starting heating up, water in the ice state contained in them begins to evaporate and a coma and a long tail are coming into existence. High quality pictures and probes sent to comet Tempel 1 show that the surface of comets is not like that, I mean "dirty snawballs", and are more similar to typical planetoid with hard surface. On January 12, 2005 NASA space probe Deep Impact was launched (later Tempel 1 was "re-visited" by the Stardust spacecraft). It was designed to study the interior composition of the comet Tempel 1 by releasing an impactor into the comet. Scientists were surprised by the effect of the impact, having much to do with hitting a hard surface and not dirty soft snowballs. At the same time, it is possible to observe very short moment before the impact powerful flash, explained by plasma physicists involved in the theory of electric universe; what very important to the theory they predicted such effect as electric discharge. Simply comets being during their aphelium are negatively charged by electricity from Universe, so they have negative charge. The probe was on the contrary charged, coming from the vicinity of the Sun. The same phenomenon is responsible for coma and long tail when comets approach the Sun being of the opposite electrical charge and discharge process occurs creating plasma visible as coma and tail. It is worthwhile also paying attention to the fact, examining photographs of comets, big resemblance to ordinary planetoids/asteroids. More information can be viewed and listened here:
Planet and moons scars, Mars traces of electric discharges
Nobody knows how the Mars Valles Marineris was created! And many others strange structures on the surface of Mars as "spiders", series of "craters" extending over a large length in one line. Some objects as so called "blueberries" are explained as geochemical processes but they were experimentally created in plasma laboratory using electric discharges. More detailed information as well as very interesting pictures you can see here:
Simulation of galaxy formation using plasma model
One of the scientific problems in astronomy is complicated process of spiral galaxies formation. As majority problems in astronomy, especially in comsmology, usually they try to explain the problem using models based on gravitation forces. New approach was based on plasma physics and is modeled as two adjacent interacting Birkeland filaments. In the early 1980s Anthony L. Peratt, Ph.D., a student of Hannes Alfvén's (Nobel Prize in Physics - 1970) , used supercomputer to simulate Alfvén and Fälthammar's concept of galaxies being formed by primordial clouds of plasma spinning in a magnetic filament . Animation presenting this process is shown below.
Credit: Anthony L. Peratt
Source of animation: http://www.plasma-universe.com/Galaxy_formation#_note-1
 Bostick, W. H., "Experimental Study of Plasmoids", Electromagnetic Phenomena in Cosmical Physics, Proceedings from IAU Symposium no. 6. Edited by Bo Lehnert. International Astronomical Union. Symposium no. 6, Cambridge University Press (1958) p.87
Scalability from laboratory experiments to the universe
In conclusion it is worth noting that the experiments with plasma and electricity in the laboratories are fully scalable, which is important when the current cosmology is highly mathematicised and almost deprived of the opportunity to experiment with the only exceptions of observations using telescopes and radio telescopes.