Astrophysics

Within our solar system, four planets are mostly made of gas - Jupiter, Saturn, Uranus and Neptune, but all are thought to possibly have a solid core of some type.

Although William Herschel is credited with discovering Uranus in 1781, later records showed that John Flamsteed viewed it more than once in 1690. However, he believed it was a star, and named it 34 Tauri.

Aristotle noticed that everything moves itself or was moved by something else. Since observation fails to disclose something moving stars and planets, Aristotle concludes that these bodies move themselves. Anything moving itself must be alive, for that is how it moves itself, so Aristotle concludes that stars and planets must be alive.

My planet is doing fine, it just turned from pink to purple and looks really sparkly!

As for your planet, which I assume is earth, she is groaning under pollution and the systematic destruction of its ecosystems. She is happy, however, that Big Brother Jups is still slinging those pesky comets out of your solar system.

I Believe That The Nickname "The Blue Planet" Means, That 70% Of The earth Is Filled With Water.... Wow.! Can u Imagine That.... Now If U Need The Definition Of Anything Else Im Here.!

In this context the celestial sphere could be considered the background of stars, planets, comets, etc., such as is visible on a clear night, as distinct from the local sky would include Earth's atmosphere and weather effects such as an observer is largely limited to during the day (with the exception of the closest star, our Sun). It's safe to say these are relatively independent - objects in the sky such as meteorological phenomena, artificial satellites, etc., would move and act independent of the celestial sphere. Remembering that Earth is a planet in space moving in an orbit (revolving around its primary) and also rotating on its axis - because of which, the celestial sphere would seem to spin over the course of 24 hours, and also change throughout the year with respect to objects inside the solar system because of its position in orbit.

No, there is no planet called Goldilocks. The term "Goldilocks planet" refers to a planet that is neither too hot nor too cold to support liquid water on its surface, making it potentially habitable for life.

In 1967, an atomic standard was adopted for second, the SI unit of time. One standard second is defined as the time taken for 9 192 631 770 periods of the radiation corresponding to unperturbed transition between hyperfine levels of the ground state of cesium - 133 atom. Atomic clocks are based on this. In atomic clocks , an error of one second occurs only in 5000 years. From 60 sec is 1 min from this 60 minutes is hour

The solar system is believed to be made of from components of supernovae explosions because of the presence of chemical elements with an atomic numbers higher than 26 (iron). Since iron has the highest binding energy per nucleon, most stars simply can't produce heavier elements in their core - the fusion process won't get more energy out of it than went into making it. Once a star begins to make iron it is doomed and its life ends very quickly. However, the immense energies in a supernova are believed to be adequate for the creation of heavier elements, which, after the explosion may later coalesce and reform into new stars and planets - hence, we are in a literal sense made from stellar material.

Our sun is likely to be at least "second generation" of recycled elements - and possibly older.

Dimanche sounds like a planet that might have a relaxed and serene atmosphere, with soft sunlight shining through a gentle haze. The planet could be characterized by peaceful landscapes and a slower pace of life.

Uranus, almost four times the diameter of Earth, is the third largest in our solar system after Jupiter and Saturn, but is slightly less dense and less massive than its near-twin Neptune. Uranus is unusual in that it rotates on its side - the axis about 97 degrees to the orbital plane. It is called an ice giant (or sometimes, gas giant) being mostly gas, unlike the inner or rocky planets like Mercury, Venus, Earth, and Mars.

it has to be at least 2 or more stars to be a star system.

Both the solar system and the Bohr model of the atom have a central body (Sun or nucleus) orbited by smaller objects (planets or electrons) in defined paths. They both follow similar principles of circular motion and gravity/electromagnetic force governing the interactions between the central body and the orbiting objects.

Mylar balloons are generally used in parties. They are more expensive, long lasting and made from thin unstretchable less permeable materials. These type of balloons have shiny surfaces with printed coloured pictures and patterns. They are used in parties and as gift materials

The pay for individuals with a PhD in astrophysics can vary depending on factors such as their specific role, experience, location, and employer. On average, astrophysicists with a PhD can earn a salary ranging from around $60,000 to $150,000 per year. Those working in academia or research institutions may earn towards the higher end of this range.

The dense gaseous nebulae where star formation occurs are called "stellar nurseries." A star may begin to coalesce due to gravitational disturbances that compress the gases of the nebula.

Venus was named after the Roman goddess of love and beauty. After the Moon, Venus is the brightest natural object in the night sky. It is sometimes called Earth's "sister planet", because of the similar size, gravity, and bulk composition. Venus is believed to have previously had Earth-like oceans, but these evaporated as the temperature rose. Venus is the second planet from the Sun, orbiting it every 224.7 Earth days. Venus' length of day is 243 Earth days. A temperature high is 900 degrees Fahrenheit. Hope that helped.

A black hole can attract and consume matter and light due to its strong gravitational pull. It can also emit radiation known as Hawking radiation, and potentially merge with other black holes to form larger ones.

Humans breath to provide oxygen to the cells throughout the human body. Cells need food and oxygen and in return produces heat, CO2, and energy. Therefore, humans need to breathe in order to "feed" their cells, as well as to get energy to power their body.

Our Sun is mostly surrounded by space; but planets in the solar system do orbit the Sun (or more correctly, a common center of gravity near the Sun), so in a loose sense planets are around the Sun or move around it.

This depends on what you mean by Ice and Cap. If you want an answer that covers ONLY H2O (water) then only the earth fits that definition. Otherwise ALL non Jovian (Gas Giant) planets in orbits past Earth from the Sun are cold enough to have frozen gas and liquid on their surfaces, even at the poles. And all of them do. Some like Neptune ( and some moons) may be completely covered.

Although this is comparing an event to a massive body, for convenience a comparison could be made using the common currency of energy. The most powerful gamma ray burst ever recorded, detected by the Fermi gamma ray space telescope in 2008, was a little less strong than six thousand supernovae, about 9 x 10^47 joules of energy. If you turned that into mass, per Einstein's famous formula E = m c^2, you'd have about 5 times the Sun's mass expressed as energy - and although not as sudden and intense as some bursts, it lasted unusually long. By comparison, the most massive known black hole (that of quasar APM 08279+5255) is about 23 billion times the mass of the Sun - so if that were converted into energy it would be a bit under five billion times as much as the biggest known burst and one would be compelled to conclude there is more 'strength' in a black hole when these extreme examples are compared.

Other approaches might yield different conclusions; because gamma bursts are transient events it is certain there have been instances of significantly greater power than recorded to date; one might also consider whether the relativistic jet (and accretion disk) of the above quasar yields more electromagnetic radiation per unit time (or otherwise, total binding energy, or work done per unit time by the black hole) than the burst to which it is being compared, which might bring into question whether it is notionally "brighter".

A method: the uranium mineral is grounded, solved in nitric acid or a basic solvent, uranium is after extracted with ion-exchangers as impure uranyl nitrate, the solution of uranyl nitrate is refined by solvent extraction (with tri-n-butylphosphate in kerosene), the uranium is precipitated as ammonium diuranate (the yellow cake or ADU), this salt is calcined in air to triuraniumoctaoxide U3O8. The oxide U3O8 is then reduced with hydrogen at about 700 0C to uranium dioxide UO2.

The gravitational force of the sun is strongest for the reason that the sun is the most massive. Gravitational force is proportional to mass; the higher the mass, the stronger the gravity.

The sun has over a thousand times the mass of the next most massive object in the solar system (Jupiter).

Both are the remainders of stars, that is dead - that no longer produce energy. A third type of "dead star" is the white dwarf. What becomes of the star after it dies - a white dwarf, a neutron star, or a black hole - depends on its mass.