A:Scientists will never know the farthest star from Earth, as the star is so far away that its light has not, nor will ever, have enough time to reach Earth. Even the stars within the visible universe are far too numerous to count, but the farthest one that humans have ever detected is about 55 million light years away. This incredibly distant star is called SDSS J 122952.66 +112227.8.
A:The atmosphere of Jupiter consists of 90 percent hydrogen gas and nearly 10 percent helium. However, its atmosphere has trace amounts of ammonia, sulfur and water vapor. Jupiter is a gas giant that is also the biggest planet in the solar system.
A:Terrestrial navigation is a field of study that helps sea-faring people locate points at sea and on the land. Similarly, it involves being able to identify the position of the ship anywhere in the world. Students are instructed in the use of nautical charts, compass corrections and voyage planning.
A:According to NASA, modern astronomers’ tools include advanced telescopes capable of studying light reflected from the sun, moon, planets, comets and stars. Radio telescopes are utilized in the study of radio waves, while space-borne gamma ray telescopes aid in the study of gamma rays.
A:The meteorites that land on earth can be made of stone, iron or stony iron. A few meteorites are made of volcanic glass, but scientists aren't sure that all of these meteorites are extraterrestrial in nature. They believe some of these meteorites are formed when material from an impact crater liquefies and then turns to glass as it's ejected into the atmosphere.
A:The sun and planets follow the ecliptic, an imaginary plane in the celestial sphere tilted approximately 23.5 degrees relative to the celestial equator. Earthbound observers see the sun and planets move along the ecliptic arc, rising up from the east and setting in the west.
A:Complex organisms have specialized tissues, such as nerves, organs or flowers. In contrast, simple organisms, such as amoeba or yeast, exist as a single cell. Larger organisms tend to have more specialized cells that smaller ones.
A:The energy required for photosynthesis comes from the sun as light energy; plants transform this light energy into chemical energy, or sugars. Plants perform this energy conversion using light, water, carbon dioxide and a green substance called chlorophyll. Photosynthesis takes place in a plant's leaves.
A:Bacteria multiply through binary fission. This process involves the division of a single cell into two identical daughter cells, and it starts when the DNA of a bacterium divides into two replicates. The bacterial cell splits into two daughter cells that have identical DNA to the parent cell.
A:Animals are important for many reasons, including the assistance they give to plant ecosystems, the psychological and emotional support they can offer to humans, and the knowledge gained from the human study of them. Some of the most important animals include primates, bats and bees.
A:Examples of acids include vinegar, citrus fruits, tomato juice, black coffee, bananas, milk, sulfuric acid, battery acid and hydrochloric acid, which is a digestive compound found in the stomach. Acids are ionic compounds made up of positively and negatively charged ions that separate in water to form hydrogen ions.
A:Oceans are one of the world's greatest sources of iodine. Iodine can also be found in other salty waters, such as brines found near oil deposits. China, Japan, Russia and Chile are some of the top global producers of iodine.
A:Formaldehyde can also be known as methanal, which is the substance's systematic name, or by alternate names like methyl aldehyde, methylene glycol or methylene oxide. This chemical compound is the simplest member of the aldehyde functional group and has a chemical formula of CH2O or HCHO. Though it is a gas at room temperature, formaldehyde solutions are used in the preservation of biological specimens and as a disinfectant.
A:Cast iron is brittle, hard and more fusible than steel. It is also nonmalleable, which means that it cannot be stretched, hammered or bent into shape. Its has a crystalline structure, and it is weak in tension.
A:In chemistry, the term "property" is frequently used to describe the attributes of a substance, such as density, oxidation, state of matter, mass, conductivity, color, bonding and many other traits. These properties are used to understand how a substance behaves in different situations.
A:Burgundy, a deep reddish brown color named for Burgundy wine, is a mix of red, brown and a little bit of blue. The purple undertone of burgundy is created by the interaction between the red and the blue. Mixing any primary color with its complementary color creates brown.
A:Yellow and purple combine to make a neutral shade of gray. Yellow and purple are complementary colors, and complementary colors combine to form neutral shades of gray or brown, depending on the amounts of each color used.
A:Red and blue mixed together make purple. Red and blue are usually mixed in equal parts, but more red or blue are added for preference. Adding white to this mixture creates a lighter tint of purple, while adding black creates a darker shade of purple.
A:Yellow and red combine to make orange. Orange is a secondary color while yellow and red are primary colors. All colors can be made from a combination of the three primary colors: yellow, red and blue.