What is the difference between dark matter and anti-matter?
How is dark matter related to dark energy?How does dark matter affect gravitational attractions of stars and galaxies?What is the proof that dark matter and dark energy exist?Tell me in layman terms.
Can dark matter spawn shadow life?
Thank you everybody for taking your time and for your informative and beautiful answers.
- nebLv 78 months agoFavourite answer
Antimatter - the universe conserves various quantum properties such as electric charge, spin, color charge (source of the strong nuclear force), etc. When new particles are created in interactions, the above properties have to be conserved. This is generally done by the creation of matter-antimatter pairs of particles. So, antiparticles will always have conserved properties that cancel out properties of the matter particles. A few particles are their own antiparticles, an example being the photon.
Dark matter is a currently unknown type of matter that is generally believed to interact via gravity and possibly the weak nuclear force. It has no electric charge or color charge so it doesn’t interact with electromagnetism or the strong nuclear force. Depending on its exact properties, dark matter will have anti dark matter or will be its own antiparticle. No, dark matter cannot spawn ‘shadow’ life IF it is what we think it is. If it doesn’t interact with the strong nuclear force or the electromagnetic force it can’t form atoms and molecules which enables the foundation for complex life
Dark matter and dark energy are not the same thing. Dark energy appears to be a property of space itself, whereas dark matter is accumulated around galaxies and has an observable gravitational effect. As the universe expands, dark energy increases with the volume of the universe - or so our best guess assumes. This is used to explain the accelerated expansion of the universe in Einstein’s general relativity.
As for evidence, we do observe the gravitational effects of dark matter. Alternative ideas are modifications to Einstein’s theory of gravity but so far none of those have passed the observational tests. As for dark energy, we have indirect evidence from the accelerated expansion of the universe. We also have the Casimir effect that shows what appears to be the effects of vacuum energy.
- Ronald 7Lv 78 months ago
Antimatter is the complete opposite of Matter
Like a Carbon Copy in Negative
It has been said that Matter came along with Antimatter
And destroyed each other but Matter had more substance and survived
Matter was the result when particles began to clump together and begin Gravity, which brought forth Atoms
It took us out from the Cosmic Soup
The rest is History
Dark Matter is a ForceSource(s): And that is the truth Indeed
- 8 months ago
>>What is the difference between dark matter and anti-matter?
Anti-matter is about the same with normal matter - only, the two convert to energy when they contact each other... Matter consists of atoms, which are protons and neutrons in a nucleus, orbited by electrons... Anti-matter has Anti-protons, anti-neutrons, orbited by positrons. These 'anti-particles' can be created from lightning and in high-energy colliders.
We honestly don't know what dark matter is. We're not sure it exists. But, when astronomers were calculating how fast a galaxy should spin - it was discovered it was spinning *far faster* than it should... stars were racing around the central core at speeds that should send them flying out into space - yet, they're held to the mass of the galaxy. Astronomers figured there was *something* unseen - and very massive - to keep stars traveling at the speeds we see... that unseen mass is what we call 'dark matter'. So far, we haven't been able to isolate any.
>>How is dark matter related to dark energy?
They're not, really. Dark matter seems to consist of very massive particles that don't seem to interact with normal matter at all.
When Edwin Hubble discovered that galactic clusters were flying apart from each other in the 1920's, it looked to him like the universe began with an explosion - a 'big bang.' It was naturally assumed that the gravity from all the galaxies in the universe would be slowing that expansion, and for years the big question was there enough gravity to *stop* it, or will it keep going? In the last 20-30 years, it was discovered that the expansion was actually *speeding up*... and, it's not known why. This unknown energy is what's called "Dark Energy."
>>How does dark matter affect gravitational attractions of stars and galaxies?
Individually, it's difficult to tell, other than they seem to be bound to the their galaxies by far more mass than is evident.
>>What is the proof that dark matter and dark energy exist?
>>Tell me in layman terms.
Already did - we see the universe expanding, and have for years... but we just discovered the expansion is *speeding up*.... that's dark energy. And, we see stars within galaxies moving far faster than they should - while staying *in* the galaxy - which is why 'Dark Matter' was conjectured...
>>Updated 22 hours ago: Can dark matter spawn shadow life?
I don't know what shadow life is. And, since we aren't sure what dark matter is either - just have to say, it's unknown...
- StarryskyLv 78 months ago
Update: Since nothing is known about dark matter except it is a majority of the universe, and holds some galaxies together, and nothing seems to affect it, and it does not radiate any energy, we don't know what it can do about life in general. And no definition of "shadow life" seems to be agreed upon by anyone. No answer for your update.
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- CarolOklaLv 78 months ago
Antimatter exists. Antimatter has an opposite charge. Positrons are electrons with a positive electric charge. Positrons occur naturally and can be made.
We don't know what dark matter is. We don't agree on the definition of dark matter. In science the word "dark" means "unknown." Dark matter may be normal matter. .
Whether dark matter and dark energy are interchangeable like matter and energy are interchangeable is unknown. The interchange of normal energy and matter is highly inefficient because of entropy.
Scientists do NOT know everything. That is,a major reason why insatiably curious people become scientists. We may get increasingly skeptical and cynical as we grow older, but that curiosity often never completely dies.
- daniel gLv 78 months ago
None,,we have no clue if such even exist.
What has been coined as antimatter is something out of the CERN collider.
- 8 months ago
Dark matter is purely speculative. We may never know if it exists and if so what it is.
So called anti-matter is just matter like any other, but with some of it's properties altered. Rather like the way coffee can be white or black, sugar or no sugar.
As a layman, I suggest you can ignore it all, and instead focus on something more relevant to everyday life, such as the phases of the moon, shapes of the constellations, names of the planets, etc.
- nineteenthlyLv 78 months ago
Dark matter may not exist. If it does, none of it is the antiparticle of any known particle unless neutrinos and antineutrinos are included. Antimatter fits on the usual symmetry diagrams of particles, hence "symmetry".