Name theunusual astronomical object that was formed when two galaxies are exactlyaligned and was discovered by an international team of astrophysicists. ?->(Show Answer!)

1. Name theunusual astronomical object that was formed when two galaxies are exactlyaligned and was discovered by an international team of astrophysicists.

Answer: OpticalEinstein ring

Reply

Comments

Tags

Show Similar Question And Answers

QA->Name theunusual astronomical object that was formed when two galaxies are exactlyaligned and was discovered by an international team of astrophysicists.....

QA->Name the galaxy discovered in October 2013 which is the oldest and most distant known galaxies at approximately 1 giga light-years from Earth?....

QA->Name theuniverse’s biggest super-clusters of galaxies discovered by the Astronomersnear the Milky Way.....

QA->Image of object is formed on which part of eye?....

QA->A virtual image larger than the object can be formed by which mirror?....

MCQ-> K, L, M, N, P, Q, R, S, U and W are the only ten members in a department. There is a proposal to form a team from within the members of the department, subject to the following conditions:[list=1][*] A team must include exactly one among P,R and S.[*] A team must include either M or Q, but not both.[*] If a team includes K, then it must also include L, and vice versa.[*] If a team includes one among S, U and W, then it should also include the other two.[*] L and N cannot be members of the same team.[*] L and U cannot be members of the same team.[/list]The size of a team is defined as the number of members in the team.What could be the size of a team that includes K?
...

MCQ-> In the modern scientific story, light was created not once but twice. The first time was in the Big Bang, when the universe began its existence as a glowing, expanding, fireball, which cooled off into darkness after a few million years. The second time was hundreds of millions of years later, when the cold material condensed into dense suggests under the influence of gravity, and ignited to become the first stars.Sir Martin Rees, Britain’s astronomer royal, named the long interval between these two enlightements the cosmic ‘Dark Age’. The name describes not only the poorly lit conditions, but also the ignorance of astronomers about that period. Nobody knows exactly when the first stars formed, or how they organized themselves into galaxies — or even whether stars were the first luminous objects. They may have been preceded by quasars, which are mysterious, bright spots found at the centres of some galaxies.Now two independent groups of astronomers, one led by Robert Becker of the University of California, Davis, and the other by George Djorgovski of the Caltech, claim to have peered far enough into space with their telescopes (and therefore backwards enough in time) to observe the closing days of the Dark age.The main problem that plagued previous efforts to study the Dark Age was not the lack of suitable telescopes, but rather the lack of suitable things at which to point them. Because these events took place over 13 billion years ago, if astronomers are to have any hope of unravelling them they must study objects that are at least 13 billion light years away. The best prospects are quasars, because they are so bright and compact that they can be seen across vast stretches of space. The energy source that powers a quasar is unknown, although it is suspected to be the intense gravity of a giant black hole. However, at the distances required for the study of Dark Age, even quasars are extremely rare and faint.Recently some members of Dr Becker’s team announced their discovery of the four most distant quasars known. All the new quasars are terribly faint, a challenge that both teams overcame by peering at them through one of the twin Keck telescopes in Hawaii. These are the world’s largest, and can therefore collect the most light. The new work by Dr Becker’s team analysed the light from all four quasars. Three of them appeared to be similar to ordinary, less distant quasars. However, the fourth and most distant, unlike any other quasar ever seen, showed unmistakable signs of being shrouded in a fog because new-born stars and quasars emit mainly ultraviolet light, and hydrogen gas is opaque to ultraviolet. Seeing this fog had been the goal of would-be Dark Age astronomers since 1965, when James Gunn and Bruce Peterson spelled out the technique for using quasars as backlighting beacons to observe the fog’s ultraviolet shadow.The fog prolonged the period of darkness until the heat from the first stars and quasars had the chance to ionise the hydrogen (breaking it into its constituent parts, protons and electrons). Ionised hydrogen is transparent to ultraviolet radiation, so at that moment the fog lifted and the universe became the well-lit place it is today. For this reason, the end of the Dark Age is called the ‘Epoch of Re-ionisation’. Because the ultraviolet shadow is visible only in the most distant of the four quasars, Dr Becker’s team concluded that the fog had dissipated completely by the time the universe was about 900 million years old, and oneseventh of its current size.In the passage, the Dark Age refers to
...

MCQ-> Study the following information carefully and answer the questions given below :A. B, C. D, F, G and H are seven football players each playing for a different team. viz. Green.- Red and Blue, with at least two of them in each of these teams. Each of them likes a fruit, viz. Apple. Guava. Banana. Orange, Mango. Papaya and Watermelon, not necessarily in the same order. B plays with F in team Blue and he likes Mango. None of those who play for either team Red or team Green likes either Guava or Banana. D plays with only the one who likes Watermelon. G likes Papaya and he plays in team Red. The one who likes Orange does not play in team Red. 1-1 likes Watermelon and he plays for team Green. A likes Apple and he plays for team Red. C does not like Guava.Which of the following players play for team Red ?
...

MCQ->Statements : Some stars are planets. Some planets are galaxies. Some galaxies are suns. Conclusions : I. All suns being galaxies is a possibility. II. Some galaxies are stars....

MCQ-> There are 21 employees working in a division, out of whom 10 are special-skilled employees (SE) and the remaining are regular-skilled employees (RE). During the next five months, the division has to complete five projects every month. Out of the 25 projects, 5 projects are "challenging", while the remaining ones are "standard". Each of the challenging projects has to be completed in different months. Every month, five teams — T1 T2, T3, T4 and T5, work on one project each. T1, T2, T3, T4 and T5 are allotted the challenging project in the first, second, third, fourth and fifth month, respectively. The team assigned the challenging project has one more employee than the rest. In the first month, T1 has one more SE than T2, T2 has one more SE than T3, T 3 has one more SE than T4, and T4 has one more SE than T5. Between two successive months, the composition of the teams changes as follows: a. The team allotted the challenging project, gets two SE from the team which was allotted the challenging project in the previous month. In exchange, one RE is shifted from the former team to the latter team. b. After the above exchange, if T1 has any SE and T5 has any RE, then one SE is shifted from T1 to T5, and one RE is shifted from T5 to T1. Also, if T2 has any SE and T4 has any RE, then one SE is shifted from T2 to T4, and one RE is shifted from T4 to T2. Each standard project has a total of 100 credit points, while each challenging project has 200 credit points. The credit points are equally shared between the employees included in that team.The number of times in which the composition of team T2 and the number of times in which composition of team T4 remained unchanged in two successive months are:
...