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(SDSSJ1128) Strange Superfast 'Cannonball' Star Likely Blasted from Supernova ~ A star with an unusual history is racing through the galaxy at breakneck speed — most likely blasted away by a supernova and carrying traces of the exploded star. The strange runaway star, which is rocketing along at more than 960,000 miles per hour (1.54 million kilometers per hour), is stained in carbon even though it's too immature to have created the stuff itself, scientists said. Kathryn Plant, a senior at the University of California, Santa Cruz (UCSC), presented the new observations earlier this month at the American Astronomical Society's 227th meeting in Kissimee, Florida. She and her co-authors said the star's tremendous speed and its carbon signal could be linked. ( If you want to have a picture of this host star namely known as SDSSJ1128 so you can click on the top left button of this blog.)

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Which exoplanet is smallest? Kepler-37b Kepler-37b is an extrasolar planet (exoplanet) orbiting Kepler-37 in the constellation Lyra. As of February 2013 it is the smallest planet discovered around a main-sequence star, with a radius slightly greater than that of the Moon.

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Question - Can a star turn into a planet ? ANSWER ~Yes, a star can turn into a planet, but this transformation only happens for a very particular type of star known as a brown dwarf. Some scientists do not consider brown dwarfs to be true stars because they do not have enough mass to ignite the nuclear fusion of ordinary hydrogen. At the same time, some scientists do not consider brown dwarfs to be true planets either because they typically sit at the center of a solar system, just like a star. A brown dwarf is a strange object with a mass that is greater than the biggest regular planets (i.e. above 13 times the mass of Jupiter) and less than the smallest regular stars (i.e. below 80 times the mass of Jupiter). Although a brown dwarf does not have enough inward gravitational pressure to ignite the nuclear fusion of regular hydrogen, it does have enough to ignite the nuclear fusion of heavy hydrogen (deuterium). Early in the life of a brown dwarf, the nuclear fusion of its heavy hydrogen releases large amounts of light and heat. As a result, a young brown dwarf glows like a regular star. Despite its name, a brown dwarf that is still glowing does not appear brown. Rather, it appears magenta or reddish orange. Despite beginning life as a star, a brown dwarf quickly uses up its heavy hydrogen, goes dark, cools, and spends the rest of its life as a planet. An atom of heavy hydrogen is just like an atom of regular hydrogen except that it has a neutron in its nucleus in addition to its proton. This extra particle in the nucleus makes it heavier. This neutron also acts like additional nuclear glue, making it easier to fuse together two atoms of heavy hydrogen. Additionally, heavy hydrogen is much rarer in the universe and in stars than regular hydrogen. Therefore, a brown dwarf cannot burn its regular hydrogen and quickly burns up its heavy hydrogen (because there is so little of it). As a result, a brown dwarf stops emitting light and heat early in its life. It then steadily cools and dims until it behaves more like a planet such as Jupiter. Despite the fact that a typical brown dwarf remains positioned at the center of a solar system like a regular star - it spends the rest of its life looking and acting like a planet. In such a solar system, the end result is a collection of planets orbiting a large central planet with no star to be found anywhere. Such a solar system ends up very cold and dark. (Note that some brown dwarfs orbit regular stars.) As of 2018, over 3000 different brown dwarfs have been identified by telescopes. This does not mean that brown dwarfs are rare. It just means that brown dwarfs are hard to detect. This makes sense when you remember that through most of its life, a brown dwarf is dark like a planet. A recent statistical analysis estimates that there are about as many brown dwarfs in our galaxy as there are regular stars.

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11 questions on the basis of space :- 1. Which star is at the center of our Solar System? Sun. 2. What is the diameter of Sun? 1,392,684 km (865,374 mi). 3. What percent of the solar system’s mass does Sun holds? 99.8 percent. 4. How many stars are in the Milky Way? more than 100 billion. 5. When was Sun born? roughly 4.6 billion years ago. 6. What is the distance between sun and earth? 92,960,000 miles (149,600,000 km). 7. Sun’s Chemical Composition: 71% of Hydrogen, 26.5% Helium and2.5% of other elements. 8. How much time does sun rays take to reach earth? 8 minutes. 9. Which planet isnearest tothe earth? MERCURY. 10. Which planet is known as the Morning Star or the Evening Star? VENUS. 11. What is the diameter of MERCURY? 3,032 miles (4,879 km).

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Hello guys, Welcome to my blog today you are going to learn the greatest things found in universe . so without wasting time Lets start - The largest black hole ~ TON 618 which carry 66,000,000,000 solar masses. (2) Largest Galaxy - IC1101 (3) Largest thing ever found in universe ~ SPT2349 [what is it ?] it is the largest thing found in the universe ever and it is the cluster of 14 other galaxies.If you will search This thing in google it will tell you this only what Im telling you but if you search that tell the name of the largest thing in the universe so you get to know that it is Hercules corona borealis great wall . it seems that your confuse don't worry keep calm and lets move on. (5) the biggest star ~ UY canis majoris don't get confuse in UY scuti it is the Largest star not the biggest.(6) The most massive star ~ R136a1 it is the most massive star,49,000,000 km.(7) Top 3 largest exoplanets 7¹) Denis - P J082303.1-491201b it is the largest exoplanet (7²) HD 100546b this planet is 50 to 150 times larger than jupiter.(7³) Kepler - 39b is 18 times more massive than jupiter [next time when you visit i will tell you about the top 10 exoplanets.(8) the most powerful beam of light ~ (GRB) Gamma ray burst also known as the most powerfull weopon of the universe.if you want to know more about GRb ,supernova and hypernova . so I maked a video on this you can watch it You can have that link in my profile. Thankyou for joining me tonight if you have any doubt so you can comment me and I will deliver you.

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Multiple Choice Questions - Space 1. Which of the following phenomena cannot be observed on the surface of the Moon? Rising and setting of the SunSolar eclipseMotion of cometsTwinkling of stars 2. Which of the following planets has a revolution time which is shorter than its rotation time? JupiterVenusMarsUranus 3. Which planet looks reddish in the night sky? JupiterSaturnMarsMercury 4. Which female astronaut spent the maximum time in space? Lisa NorwakKalpana ChawlaSunita WilliamsNone of these 5. Which planet has the fastest revolution time? MercuryUranusNeptuneJupiter 6. An astronaut in outer space will observe sky as WhiteBlackBlueRed 7. Which of the following planets rotates in a direction opposite to the direction of earth's rotation? MarsJupiterVenusMercury 8. What is the average distance (approximate) between the Sun and the Earth? 70 x 105 km100 x 105 km110 x 106 km150 x 106 km 9. NASA's Deep Impact space mission was employed to take detailed pictures of which comet nucleus? Halley's CometHale-BoppHyakutakeTempel 1 10. Which of the following planets has a lesser rotation time than the Earth? JupiterMarsMercuryVenus 11. What is the name of the first woman space tourist? Jullian MooreAnousheh AnsariPaula RadcliffeNamira Salim 12. Storms of gases are visible in the chromospheres of the Sun during CyclonesAnticyclonesLunar eclipseSolar eclipse 13. The name of the world's first black spaceman is Prensa Latina.Arnaldo Tamayo Mendez.Yury Rumanenko.Robert Mendereze. 14. The first person to enter into space was Valentina TereshkovaEdward H. WhiteYuri GagarinAlan Shepard 15. How much time does light require to travel distance of 150,000,000 kilometers from the Sun to the earth? 8 1/3 minutes8 1/2 minutes8 1/4 minutes9 minutes 16. The name of the galaxy in which the earth is a planet is AndromedaUrsa MajorUrsa MinorMilky Way 17. The asteroid belt is located between which two planets in the solar system? Earth and MarsMars and JupiterJupiter and SaturnSaturn and Uranus 18. The planet that lies at the outermost orbit of the solar system is : SaturnNeptuneMercuryUranus 19. Which of the following planets is named after a Greek God, unlike others which are named after Roman Gods? UranusNeptuneJupiterMercury 20. The planet nearest to the sun is : SaturnJupiterMarsMercury 21. A star of which colour can be said to be the coolest? YellowBlueRedBlack 22. In order to know the time, the astronauts orbiting in an earth satellite should use : a watch having mainspring to keep it goinga pendulum clockeither a pendulum clock or a watchan alarm clock 23. The planets on either side of the earth are : Mercury and Venus ,mars and Jupiter, mars and Venus, Venus and Saturn 24. Which of the following Planets have no moons? Pluto and Mercury,Mars and Venus,Mercury and Venus ,Pluto and Mars 25. Black hole is : A dark hollow cavity,A massive collapsing star, the other side on the moon ,the other side of sun 26. How old is the solar system (approximately)? 5 billion years,50 billion years,500 billion years,5 million years 27. Which of the following planets/celestial bodies is nearest to the Sun? Saturn ,Uranus, Neptune ,Pluto 28. According to International Astronomical Union which one of the following has lost its status as a planet? Jupiter ,Uranus, Neptune ,Pluto 29. ‘New Horizons’ spacecraft was launched by NASA to study which of the following planet? Mars ,Pluto, Jupiter ,mercury 30. The coldest planet in the solar system is : Pluto ,Venus, Uranus, Jupiter 31. Which of the following is the nearest galaxy to the Milky Way? Andromeda, cartwheel galaxy, pinwheel galaxy,Whirlpool galaxy 32. Which planet has the solar system's highest mountain Olympus Mons? Jupiter,Uranus,Venus,Mars 33. Which of the following is not a gas planet? Jupiter ,Uranus,Venus,Neptune

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