7 curiosities about the universe

The universe offers a vast field of study for astronomers and scientists. And because the surprises are made, more questions about the operation of space.

Why is the space dark?

The space is dark because most of it is empty, with no body emitting or reflecting light. It may also happen that the stars that transmit lights to space are not visible to human eyes, or that these stars are so far away that the light emitted by them has not reached us or the length of the waves are too weak to be perceived .

Can screams be heard in space?

The sounds we hear here on Earth are basically sound waves that vibrate through the air and reach our ears. But in space there is no air, so the sound has no means to propagate. So if you happen to get lost in the cosmos and try to scream for help, no one will hear anything.

Are galaxies as we see them in the images?

Not the naked eye. Galaxies generally transmit light in wavelengths that are not visible to humans, and therefore are processed so that we can see all their splendor. And almost always the colors are edited so that the images have an artistic touch. The universe is more dazzling than we think, it is only our eyes that can not see, all its beauties.

What is the temperature of the universe?

That depends on where you measure it. At the extremities of the stars, for example, the temperature can beat millions of degrees Celsius. But on planets and celestial bodies that are thousands of miles from these stars, temperatures can be freezing, as in Neptune, for example, where the average temperature is -235 ° C.

What happens if someone drops a pum in space?

Because of the absence of air in the space, the flatulences do not leave the place. Astronauts wear clothing equipped with LiOH, which filters gases such as methane and carbon dioxide, which helps to dispel the inconvenience. And above all, astronauts often direct their gases to less-used areas to spare other crew members.

We are alone?

The question that does not want to shut up: are we alone in the Universe? In 1961, astrophysicist Frank Drake posited a controversial equation suggesting that, given many factors, the probability of life elsewhere is extremely high. Drake counted the formation of new stars, the number of stars with planets, the combination of conditions for the existence of life, among other specifications. We still do not find life in any corner of the galaxy, but that does not mean we should lose hope.

The earth is flat?

To this day, many believe that the earth is flat, but this theory can be discarded, because with the technology we have, we can observe the shape of our planet, as well as other celestial bodies like the moon, for example, that have the format round.