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What is the Sun?

The Sun is a star in our Milky Way

The Sun gives off energy as electromagnetic radiation. That includes light, infra-red energy (heat), ultraviolet light and radio waves. It also gives off a stream of particles, which reaches Earth as solar wind. The source of all this energy is the reaction in the star which turns hydrogen into helium and makes huge amounts of energy.

The Sun gives off energy as electromagnetic radiation. That includes light, infra-red energy (heat), ultraviolet light and radio waves. It also gives off a stream of particles, which reaches Earth as “solar wind”. The source of all this energy is the reaction in the star which turns hydrogen into helium and makes huge amounts of energy.

The Sun is a star like many others in our Milky Way galaxy. It has existed for a little over 4.5 billion years, and is going to continue for at least as long. The Sun is about a hundred times as wide as the Earth. It has a mass of 1.9891×1030 kg, which is 333,000 times the mass of the Earth. The Earth can also fit inside the Sun 1.3 million times.

Source: Wikipedia

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What is Mars?

Mars is the fourth planet from the Sun in the Solar System and the second-smallest solid planet

Mars is the fourth planet from the Sun in the Solar System and the second-smallest solid planet. Mars is rocky and cold, with polar ice caps of frozen water and carbon dioxide. It has the largest volcano in the Solar System, and some very large impact craters. Mars is named after the mythological Roman god of war because it is a red planet, the colour of blood.

The planet Mars is made of rock. The ground there is red because of iron oxide (rust) in the rocks and dust.[7] The planet’s atmosphere is very thin and contains a lot of carbon dioxide and a very tiny amount of oxygen. The temperatures on Mars are colder than on Earth, because it is farther away from the Sun and has less air to keep warmth in. There is water ice and frozen carbon dioxide at the north and south poles. Mars does not have any liquid water on the surface now, but signs of run-off on the surface were probably caused by water. Mars has two small moons, called Phobos and Deimos.

Source: Wikipedia

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Tilikum - the orca

Who is Tilikum?

Tilikum was an Orca who lived in SeaWorld, Orlando

Tilikum the Orca (November 1981 – January 6, 2017), nicknamed Tilly, was a bull orca. He was captured in Iceland in 1983 at Hafnarfjörður, near Reykjavík. After a year he was transferred to Sealand of the Pacific in Victoria, British Columbia. He was subsequently transferred in 1992 to SeaWorld Orlando, Florida.

Tilikum was involved in the death of three people: a trainer at the now-defunct Sealand of the Pacific in Victoria, British Columbia, a man trespassing on SeaWorld Orlandos property, and a trainer at Orlandos SeaWorld. Tilikum was heavily featured in the CNN 2013 documentary Blackfish, a film discussing captivity of orcas for entertainment.

He sired 21 calves, of whom ten are still alive. In the Chinook Jargon of the Pacific Northwest, the name means friends, relations, tribe, nation, common people. SeaWorld announced in March 2016 Tilikums health was deteriorating, and it was thought he had a lung infection caused by a rare resistant bacterium. In May 2016, it was reported Tilikums health was improving. Seaworld announced Tilikum had died on January 6, 2017.

Source: Wikipedia

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What is Andromeda Galaxy?

The Andromeda Galaxy is the nearest spiral galaxy to the Milky Way, our galaxy

The Andromeda Galaxy is the nearest spiral galaxy to the Milky Way, our galaxy. Andromeda is sometimes called M31 or NGC 224 by astronomers. It is about 2.6 million light years away from us.

Andromeda is the largest galaxy of the Local Group, which consists of the Andromeda Galaxy, the Milky Way Galaxy, the Triangulum Galaxy, and about 30 other smaller galaxies.

At an apparent magnitude of 3.4, the Andromeda Galaxy is notable for being one of the brightest Messier objects, making it visible to the naked eye on moonless nights even when viewed from areas with moderate light pollution. Although it appears more than six times as wide as the full Moon when photographed through a larger telescope, only the brighter central region is visible to the naked eye. Being both large and bright, it is one of the farthest objects that can be seen without a telescope or binoculars.

Source: Wikipedia

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What is Ganymede?

Ganymede is the largest moon of Jupiter

Ganymede is the largest moon of Jupiter. It is also the largest moon in the Solar System. Ganymede is larger in diameter than Mercury, but has only about half its mass. Ganymede is much less dense. Ganymede is part of a group called the Galilean Satellites. These also include Io, Europa and Callisto.

Galileo Galilei discovered this moon in 1610. Simon Marius suggested the name Ganymede soon after. In Greek mythology, Ganymede was Zeus’ cup-bearer. Ganymede is the only Galilean moon of Jupiter named after a male figure.

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Saturn_during_Equinox

What is Saturn?

Saturn is the sixth planet from the Sun in the Solar System

Saturn is the second largest planet in the Solar System, after Jupiter. Saturn is a gas giant.

The thing that makes Saturn different is its very large system of rings around it. These rings are made of ice with smaller amounts of rocks and dust. Saturn also has 62 known moons orbiting the planet. The largest moon is Titan which is the second-largest moon in the Solar System. Saturn’s distance to the sun is about 1,400,000,000 km (869,000,000 mi). It takes Saturn 29.6 years to revolve around the Sun.

Saturn was named after the Roman god Saturnus.

Source: Wikipedia

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What is Venus?

Venus is the second planet from the sun

Venus is a terrestrial planet because it has a solid, rocky surface like other planets in the inner solar system. Astronomers have known Venus for thousands of years. Venus is the brightest thing in the night sky except for the Moon. It is sometimes called the morning star or the evening star as at some elongations it is easily seen just before the sun comes up in the morning and, at other elongations, just after the sun goes down in the evening. Venus comes closer to the Earth than any other planet does.

Venus is quite similar to earth in size and gravity. But Venus’ atmosphere (air) is mostly carbon dioxide with clouds of sulphuric acid which makes it very poisonous to humans.

The pressure on Venus’ surface is 92 times that of Earth. Venus has no moons. Venus spins very slowly on its axis and it spins in the opposite direction to the other planets. The ancient Romans named it after their goddess Venus.

Source: Wikipedia

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What is Jupiter?

Jupiter is the largest planet in the Solar System

Jupiter has the mass of about 318 Earths and it the largest planet in the Solar System. It is the fifth planet from the Sun. Jupiter is classified as a gas giant, both because it is so large and due to the fact that it is made up mostly of gas.

Jupiter is the third brightest object in the night sky and can be seen with the naked eye. Only the Earth’s moon and Venus are brighter.

Jupiter has at least 67 moons. Of these, 55 are very small and less than five kilometres wide. The four largest moons of Jupiter are Io, Europa, Ganymede, and Callisto. Ganymede is the largest moon in the Solar System.

Source: Wikipedia

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What is Pluto?

Pluto is a dwarf planet in the Solar System

Pluto is the ninth-largest body that moves around the Sun. At first, Pluto was called a planet. Now, it is the largest body in the Kuiper belt.

Pluto is mainly made of rock and ice. It is quite small. It is about a fifth (⅕) of the weight of the Earth’s Moon. It is only a third (⅓) its volume. It has an odd orbit and this orbit is very sloped. It takes Pluto to 30 to 49 AU (4.4–7.4 billion km) from the Sun. This causes Pluto to sometimes go closer to the Sun than Neptune.

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Winter solstice

What is winter solstice?

Winter solstice is an astronomical phenomenon marking the shortest day and the longest night of the year

Solstices happen twice a year – once around June 21 and again around December 21. In the Northern Hemisphere, the December Solstice is the winter solstice and the shortest day of the year. In the Southern Hemisphere, it is summer solstice and the longest day of the year, because equinoxes and solstices are opposite on opposite sides of the planet.

The term solstice comes from the Latin word solstitium which means: ‘the Sun stands still’. This is because on this day, the Sun reaches its southern-most position as seen from the Earth. The Sun seems to stand still at the Tropic of Capricorn and then reverses its direction. Another common name for solstice is the day the Sun turns around. The good thing about the winter solstice is of course the fact that the days get longer again.

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