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False.
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Why was neutrinos never been detected experimentally?
In fact, they were. The most recent and significant experiments to detect neutrinos include the T2K and SNO (soon to be SNO+) experiments.
Explanation of missing solar neutrinos?
Neutrinos are incredibly hard to detect so the "absence" of neutrinos doesn't mean they are not there. It was long thought that neutrinos did not decay. We now know they do so. Thus, the lower than expected number of neutrinos detected coming from the Sun has been fully explained. It took four decades but the problem is now fully resolved.
What is an axion?
An axion is a hypothetical elementary particle that is a candidate for dark matter. It is an extremely light and neutral particle that has been proposed to solve some problems in particle physics and cosmology, although it has not yet been observed experimentally.
Is there such things as gravitons?
They're predicted in Physics, but they've never been detected yet.
A proposed explination for an observation which has not been experimentally tested?
A hypothesis
What proposed explanation for an observation which has not been experimentally tested?
Hypothesis
What is unreliable science?
Scientific data that has not been experimentally tested is unreliable.
Does tachyon atoms exist?
Nobody knows, they have never been detected. For now tachyonic matter is purely a theoretical construct.
What particle is believed to mediate gravity?
The particle believed to mediate gravity is called a "graviton." It is a hypothetical elementary particle that is thought to be responsible for carrying the force of gravity in quantum gravity theories. However, gravitons have not yet been detected experimentally.
Why was a Bose-Einstein condensate not already considered as a state of matter?
Because it had not been experimentally confirmed.
What is a proposed explanation for an observing which has not been experimentally tested?
A proposed explaination for an observation is called a hypothesis.
What are neutrinos-?
Neutrinos are subatomic particles, which exist in three "flavours" - the electron, muon and tao neutrino (listed in order of increasing ass); each of these also has a respective antiparticle. Most of the neutrinos incident on the Earth are "Solar Neutrinos" (neaning that they are emitted by the sun. The neutrinos oscillate between the different "flavours", which are determined by their respective masses, and are extremely unreactive - more than 50 trillion neutrinos go the human body every second! As the masses of the neutrinos are very minimal - virtually zero - neutrinos travel at near-light speed.There have been several experiments dedicated to the detection of neutrinos, the most notable being T2K and SNO amongst others; SNO is currently being re-activated with enhanced detection prospects through the use of an organic scintillating fluid, as is now named SNO+.
