What does it mean to see Mars in your dream?

Seeing Mars means you are having some sort of conflict in your waking life. Remember to consider the feelings of others in your life, because this may be a warning that you have been hurting them. Being on Mars can relate to feeling motivated in your waking life and aiming to reach a goal of yours.

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Keeping this in consideration, what will happen if 2 galaxies collide?

When you're wondering what happens when two galaxies collide, try not to think of objects smashing into each other or violent crashes. Instead, as galaxies collide, new stars are formed as gasses combine, both galaxies lose their shape, and the two galaxies create a new supergalaxy that is elliptical. What did Margaret Geller discover? galaxies Margaret Joan Geller (born 1947) discovered the existence of a Great Wall of galaxies in space that stretches at least 500 Million light-years.

Why is space black?

Because space is a near-perfect vacuum - meaning it has exceedingly few particles - there's virtually nothing in the space between stars and planets to scatter light to our eyes. And with no light reaching the eyes, they see black. In respect to this, what is the bigger than the universe? No, the universe contains all solar systems, and galaxies. Our Sun is just one star among the hundreds of billions of stars in our Milky Way Galaxy, and the universe is made up of all the galaxies ? billions of them.

And another question, what is the smell of sperm?

Semen normally smells like ammonia, bleach, or chlorine. Semen is about 1 percent sperm and 99 percent other compounds, enzymes, proteins, and minerals. Many of these substances are alkaline. This means that they're above a 7 on the pH scale, which is measured from 0 (highly acidic) to 14 (highly alkaline).