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India shoots down satellite, becomes ‘space superpower’

India shoots down satellite, becomes 'space superpower' 86

Indian Prime Minister Narendra Modi has claimed his forces shot down a low-earth satellite in a pre-planned test. Such capabilities raise fears of a weaponization of space at a time of rising tension with Pakistan.

Indian Prime Minister Narendra Modi said on Wednesday that his country’s forces had shot down a low-orbit satellite as part of a test exercise.

Modi said he was proud of his scientists and congratulated those behind the mission. He said the exercise proved India had become a “space superpower,” bringing it in line with the US, Russia and China.

Although Modi said the test exercise, deemed “Mission Shakti” (Hindi for “power”), was not aimed at any one country, the announcement could inflame tensions with Pakistan just days ahead of a crucial election.

Pakinstan responded by urging international action against military threats in space.

“Space is the common heritage of mankind and every nation has the responsibility to avoid actions which can lead to the militarization of this arena,” Pakistan’s foreign ministry said in a statement.

Prime Minister Modi was careful to point out that India opposes the weaponization of space, emphasizing that Wednesday’s test did not violate international law.

Indian space expert Ajay Lele underscored Modi’s claim by saying: “India is not placing weapons in space. A ground-based missile defense interceptor system was used to destroy the satellite. If some country or adversary places a satellite for intelligence or for troubling India, India now has the capability to remove such an irritant.”

Modi praised the effort on Twitter, saying it was important because it was an entirely indigenous effort. India has an ambitious space program, having launched probes to the moon and Mars, as well as unveiling plans for a manned space mission by 2022.

Polls are due to open in Indian elections in just days, with the vote lasting six weeks. Modi’s Bharatiya Janata Party is facing a challenge from opposition leader Rahul Gandhi’s Congress party. The nationalist leader crushed the Congress party at the last general election in 2014.

Analysts said the latest speech fell in line with Modi’s campaign message so far, in which he has presented aspirational goals for India. Modi was quoted as saying “I dream of an India which can think two steps ahead. I dream of an India that is completely self-reliant in every possible way.”

Tensions between India and Pakistan have escalated in recent months, after a militant attack killed 40 policemen in Indian-controlled Kashmir in February. Islamabad denied it was behind the attack, but India responded with a cross-border air strike against what it said was a militant training camp.

Pakistan returned fire with its own air strikes, and by shooting down an Indian plane over Kashmir. The pilot was captured and later released.

Since then, Pakistan Prime Minister Imran Khan has offered to talk with Modi over the issue. However, Pakistan has accused the Hindu right-wing leader of capitalizing on the tensions for political gain.

Source www.dw.com

Space

Why the universe does not fit into science

Why the universe does not fit into science 99
Photo: YouTube

Science can be compared to an artist painting what he has never seen, or to a writer describing other people’s travels: objects that he has never seen, places where he has never been. Sometimes such scientific “arts” turn out to be beautiful and interesting, but most of them will forever remain only theories, because they are beyond human capabilities.

In fact, science has the right only to speculate: how our universe appeared, how old it is, how many stars and other objects it contains.

Universe model

Why the universe does not fit into science 100

How many stars are there in the sky?

With an unarmed eye, a person can see about nine thousand stars in the sky in one cloudless and moonless night. And armed with binoculars or a telescope, much more – up to several million. However, this is much less than their true number in the universe. Indeed, only in our one galaxy (the Milky Way) there are about 400 billion stars. The exact amount, of course, is not known to science. And the visible universe contains about 170 billion galaxies.

It is worth clarifying that scientists can see the universe 46 billion light years deep in all directions. And the visible (observable) universe includes the space accessible to our eyes from the moment of the Big Explosion. In other words, only this (accessible to human perception) space science refers to our universe. Science does not consider everything that follows.

It is believed that there are supposedly a ceptillion (10 to 24 degrees) stars in our universe. These are theoretical calculations based on the approximate size and age of the universe. The origin of the universe is explained by the Big Bang theory. This is why the universe is constantly expanding and the more time passes, the more complex the universe and its components become.

Why the universe does not fit into science 101

It is not entirely correct to consider and perceive this scientific theory “head-on”. Scientists always claim that that explosion was not exactly an explosion, and the point that exploded was not the only one. After all, it was everywhere, because space did not exist then. And in general – everything happened quite differently from what is described in the Big Bang theory, but all other descriptions of the origin of the universe are even more incredible and inaccurate.

Separate but interconnected

That which is beyond the reach of human perception is usually discarded by science, or recognized as non-existent. Recognizing one thing, science does not want to recognize the existence of the other, although everything in our world is interconnected and is not able to exist separately – by itself.

Each object of the universe is a part of it much more than an independent, separate object.

Any person, like any material object of our world, consists of components: organs, cells, molecules, atoms. And each of its constituent parts can represent the whole world. Separate, and at the same time connected with all the others.

However, science, as a rule, perceives all the components of the universe – people, animals, plants, objects, the Earth, the Sun, other planets and stars – as separate subjects, thereby limiting itself.

Why the universe does not fit into science 102

Even what is considered the visible universe, one of the atoms of which could be called our solar system, is not subject to the boundaries of human perception. But perhaps the atom is an exaggeration, and our solar system is not even an atom, but one of its elements!

How, being so far from the truth, can one reason about something with the degree of probability with which science tries to reason about the origin of the universe?

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Space

An unexplained wobble shifts the poles of Mars

An unexplained wobble shifts the poles of Mars 103

The red planet sways from side to side like a whirligig when it loses speed. The new study allowed scientists to notice that the poles of Mars deviate slightly from the axis of rotation of the planet. On average, they move 10 cm from the center with a period of 200 days.

Such changes are called the Chandler Oscillations  – after the American astronomer Seth Chandler, who discovered them in 1891. Previously, they were only seen on Earth. It is known that the displacement of the poles of rotation of our planet occurs with a period of 433 days, while the amplitude reaches 15 meters. There is no exact answer why this is happening. It is believed that the fluctuations are influenced by processes in the ocean and the Earth’s atmosphere.

Chandler’s wobbles on Mars are equally perplexing. The authors of the study discovered them by comparing data from 18 years of studying the planet. The information was obtained thanks to three spacecraft that orbit the Red Planet: Mars Odyssey, Mars Reconnaissance Orbiter and Mars Global Surveyor. 

Since Mars has no oceans, it is likely that the Red Planet’s wobbly rotation is due to changes in atmospheric pressure. This is the first explanation that researchers have shared. In the future, there should be new details about the fluctuations that have so interested the scientific community.

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Space

Possible “portals” to distant regions of the Universe found in space

Possible "portals" to distant regions of the Universe found in space 104

Scientists have found in space possible “portals” to distant regions of the universe. They could be some supermassive black holes in the center of galaxies. This is reported by the Monthly Notices of the Royal Society magazine. In theory, a spaceship can pass through such portals.

Russian scientists have found that black holes in very bright galaxies may be the entrances to these “portals” or “wormholes”. In theory, a spaceship can pass through such portals. However, they are surrounded by intense radiation, which negates the crew’s chances of survival.

The similarity between a wormhole and a black hole is that they have extremely strong gravity. However, as scientists believe, the body cannot get out of the black hole, falling beyond the event horizon, while the “wormhole” must have an exit somewhere else in space.

Possible "portals" to distant regions of the Universe found in space 105
Photo: 
NASA

So, experts say, the collision of two bodies inside a wormhole in images from space would look like an explosion. That is, the active galactic nucleus (AGN), which seemed to be such earlier, may in fact be the entrance to the “portal”.

Russian physicist Mikhail Piotrovich emphasizes that scientists still know little about the internal structure of the “wormhole.” Moreover, they are not even sure that such a phenomenon exists at all. In addition, the closest object similar to it is 13 million light-years away, so humans are unlikely to be able to reach it in the foreseeable future.

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