Science

Mars rover discovered life on Mars long ago? Opportunity photographed a "lizard", what is it?
It is well known that the United States is the country that has explored Mars the most times in the world because it also has more information about Mars than any other country. Many of the real pictures of Mars that we usually see in the news media are almost always taken by U.S. orbiting rovers and Mars rovers. The images we have seen are only a small part of the picture, NASA has kept a considerable number of images unpublished, which can be seen in their newly released photos last August.
By Sukkning3 years ago in Earth
Will humans disappear from the earth? Scientists predicted 2799 years is the inflection point, what will happen
Will humans disappear from the earth? Scientists predicted 2799 years is the inflection point, what will happen The mainstream of the scientific community believes that the biological history of the Earth has at least 3.6 billion years, but the pattern of the Earth's ecosystem in these billions of years is constantly changing, the last period is the dominance of this species, the next period will be replaced by another species domination, in short, no species can always dominate. For example, it is believed that the longest domination of the Earth's dinosaurs in 65 million years ago gradually extinct, ruling the Earth for more than 100 million years, so far no species of domination time can exceed the dinosaurs.
By De pepper3 years ago in Earth
10 billion times the size of the Sun! This star overturns existing theories
10 billion times the size of the Sun! This star turns existing theories upside down How big is the biggest star? I believe that many friends see here, will think of the shield UY, after all, this star when scientists found it, but very shocked, its volume is up to 450 million times the volume of the Sun, can be said to be very scary, however, in recent years, along with the depth of research, in fact, in our eyes very large shield UY, but not the largest star in the universe.
By Stajila3 years ago in Earth
There is no oxygen in the vacuum of the universe, but why the sun can burn?
The sun is like a huge fireball hanging in the sky, every moment, it is selflessly sending energy to the Earth, because of this, the Earth has become a paradise for life, and humans, as the only kind of life on Earth with higher intelligence, have long been accustomed to the existence of the sun.
By Roseto3 years ago in Earth
The Martian atmosphere is less than 1% of Earth's density, so how did the witty helicopter fly?
On April 19, 2021, the first human Mars helicopter, the U.S. Kijiki, made its maiden flight. This marked another step forward for human spaceflight, but it was only the beginning.
By C Niecy3 years ago in Earth
The Earth is approaching Silverheart Black, will it be swallowed up in the future?
Earth is one of the eight planets in our solar system, the third in order of proximity to the Sun, and the largest Earth-like planet in our solar system in terms of diameter, mass, and density, at a distance of 150 million kilometers from the Sun. The Earth rotates from west to east while revolving around the Sun. It is 4 to 4.6 billion years old and has a natural satellite, the Moon, which forms a celestial system, the Earth-Moon system. 4.6 billion years ago it originated in the primordial solar nebula.
By Hitchinson Metz3 years ago in Earth
As the most distant spacecraft from mankind took the first family photo of the solar system
To say that the history of man-made probes that make humans on the planets of the universe is the Voyager, the legendary and mysterious cosmic excursion that brought us new knowledge of the universe. Voyager probe is the United States launched in 1977, as two planetary probes. The original name of the "Mariner Project" is "Mariner 11" and "Mariner 12". Costing $350 million to build, the two probes weigh 815 kg each and have roughly the same structure, with cosmic ray sensors, plasma sensors, magnetometers, wide-angle, narrow-angle television cameras, infrared interferometers, and other 11 kinds of scientific instruments, which cleverly use the gravitational effect of giant planets, so that they change their orbits in time, to achieve the purpose of simultaneous detection of multiple planets and their satellites.
By C Niecy3 years ago in Earth
Twenty years of winter in Uranus? Rebellious Venus? 10 interesting facts about the solar system
While we all remember a few things about our solar system, such as that there are eight planets, there are still many little-known cold facts that many people don't know. The following is a list of ten interesting things about our solar system and the planets in it.
By Derwall Don3 years ago in Earth
Trampled cockroaches do not clean up, why the next day is gone? Experts: it was companions "carried away"
The day and night of the cockroaches were very annoying, obviously before going to bed and stepping on a dead, would have liked to clean up the next day, the results came to the next day to see, found that the stepped on dead cockroaches disappeared. In this scene, let yourself sleep, the mind is also constantly thinking back, stepped on the dead cockroaches in the end where it went?
By Deljewitzki3 years ago in Earth
The future world, how humans face dangerous creatures
In the world of the future, the total number of humans is rapidly decreasing due to the growing spread of plague and the dangers of new species, and most of the remaining people are entering the high-walled cities to live in for shelter.
By Orr Hirshman3 years ago in Earth
Seven islands in the world with the most shark attacks, how many do you know?
Sharks are the top predators in the ocean, often preying on small fish, seahorses, and other small animals in the ocean's vast ecosystem, and occasionally on humans. Although shark attacks on humans are relatively rare, shark attacks on humans occur around the world every year, and in this issue, we take a look at the seven islands with the most shark attacks in the world.
By Baudamolova3 years ago in Earth
The alien signal discovered last year, scientists spent most of the year to decipher, and now finally have the answer
Last September, a study on gravitational waves was published. The gravitational wave signal, named GW190521, was thought to be from the merger of two black holes, yet now scientists have discovered that the problem is not so simple.
By Lane3 years ago in Earth