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Do your eyes change in space?
Astronauts experience changes to their eyes and vision during spaceflight, a phenomenon known as Spaceflight Associated Neuro-Ocular Syndrome (SANS). Microgravity causes a person's blood and cerebrospinal fluid to shift toward the head, and researchers suspect that these fluid shifts are an underlyiRead more
Astronauts experience changes to their eyes and vision during spaceflight, a phenomenon known as Spaceflight Associated Neuro-Ocular Syndrome (SANS). Microgravity causes a person’s blood and cerebrospinal fluid to shift toward the head, and researchers suspect that these fluid shifts are an underlying cause of SANS.
See lessWhat is the theory of space and time?
General relativity is a physical theory about space and time and it has a beautiful mathematical description. According to general relativity, the spacetime is a 4-dimensional object that has to obey an equation, called the Einstein equation, which explains how the matter curves the spacetime.
General relativity is a physical theory about space and time and it has a beautiful mathematical description. According to general relativity, the spacetime is a 4-dimensional object that has to obey an equation, called the Einstein equation, which explains how the matter curves the spacetime.
See lessIs element 119 possible?
Ununennium, also known as eka-francium or element 119, is a hypothetical chemical element; it has symbol Uue and atomic number 119.
Ununennium, also known as eka-francium or element 119, is a hypothetical chemical element; it has symbol Uue and atomic number 119.
See lessWhich is the heaviest element?
Oganesson, named for Russian physicist Yuri Oganessian (SN: 1/21/17, p. 16), is the heaviest element currently on the periodic table, weighing in with a huge atomic mass of about 300. Only a few atoms of the synthetic element have ever been created, each of which survived for less than a millisecondRead more
Oganesson, named for Russian physicist Yuri Oganessian (SN: 1/21/17, p. 16), is the heaviest element currently on the periodic table, weighing in with a huge atomic mass of about 300. Only a few atoms of the synthetic element have ever been created, each of which survived for less than a millisecond.
See lessWhat is the difference between inert and noble gases?
An inert gas is one that does not undergo chemical reactions. Noble gases refers to the right most group of the periodic table composed of helium, neon, argon, krypton, xenon, and radon. As you might have seen as an example in class, some noble gases can form chemical compounds, such as XeF4.
An inert gas is one that does not undergo chemical reactions. Noble gases refers to the right most group of the periodic table composed of helium, neon, argon, krypton, xenon, and radon. As you might have seen as an example in class, some noble gases can form chemical compounds, such as XeF4.
See lessWhy is N2 inert?
The triple bond is covalent in nature and it is non-reactive in normal conditions. The triple bond present in nitrogen is very strong. Therefore, it requires a lot of energy to break those bonds to take part in a reaction. Hence, nitrogen is commonly referred to as and used as an inert gas.
The triple bond is covalent in nature and it is non-reactive in normal conditions. The triple bond present in nitrogen is very strong. Therefore, it requires a lot of energy to break those bonds to take part in a reaction. Hence, nitrogen is commonly referred to as and used as an inert gas.
See lessWhat is called inert gas?
An inert gas is a gas that does not readily undergo chemical reactions with other chemical substances and therefore does not readily form chemical compounds. The noble gases often do not react with many substances and were historically referred to as the inert gases.
An inert gas is a gas that does not readily undergo chemical reactions with other chemical substances and therefore does not readily form chemical compounds. The noble gases often do not react with many substances and were historically referred to as the inert gases.
See lessIs space totally black?
Above the Earth's atmosphere, outer space dims even further, fading to an inky pitch-black. And yet even there, space isn't absolutely black. The universe has a suffused feeble glimmer from innumerable distant stars and galaxies.
Above the Earth’s atmosphere, outer space dims even further, fading to an inky pitch-black. And yet even there, space isn’t absolutely black. The universe has a suffused feeble glimmer from innumerable distant stars and galaxies.
See lessHow big is the Milky Way?
Our galaxy probably contains 100 to 400 billion stars, and is about 100,000 light-years across. That sounds huge, and it is, at least until we start comparing it to other galaxies. Our neighboring Andromeda galaxy, for example, is some 220,000 light-years wide.
Our galaxy probably contains 100 to 400 billion stars, and is about 100,000 light-years across. That sounds huge, and it is, at least until we start comparing it to other galaxies. Our neighboring Andromeda galaxy, for example, is some 220,000 light-years wide.
See lessWhat is the birthplace of the stars?
The birthplace of a star is nebula which is made up of dust particles and gases. These are present in the interstellar space, i.e., the space between the stars.
The birthplace of a star is nebula which is made up of dust particles and gases. These are present in the interstellar space, i.e., the space between the stars.
See less