Unlike planets, comets move on highly elongated orbits, and therefore are visible only at short periods close to the Sun.
The main part of any comet is its nucleus .
According to the hypothesis of the famous American researcher of comets Fred Lawrence Whipple, cometary nucleus is an ice consisting of a mixture of frozen water and frozen gases interspersed with refractory rocky and metallic particles . Figuratively speaking, it looks like a “dirty iceberg”.
Let us imagine that we see the newly opened the comet, which is somewhere in the vicinity of Jupiter’s orbit. Seeing through the telescope hazy pale speck, like a spherical nebula (such unattractive are presented to the observer of a distant comet), we may be disappointed at first. With the approach of the comet to the Sun the solar flux increases. Comet “ice” begin to evaporate rapidly. Around the nucleus formed a vast glowing gas shell – coma. Together with the core of it is the head of the comet. Continue reading
Dutch company Mars One intends to send the first volunteers to the Red planet by 2023. But our expert explains why it’s not going to happen
Organizers of large-scale colonization of the red planet have previously determined the volunteers who will fly to Mars by 2023
Organizers of large-scale colonization of the red planet have previously determined the volunteers who will fly to Mars by 2023. Dutch company Mars One is counting on that date for $ 6 billion to build a permanent base there.
Just primary have been selected 1058 candidates. Most of them are residents of the U.S. — 297 people. From Russia – 52 volunteers. But by 2015 the project managers will select 24 people who will go to Mars. By the way, the company warns that a return ticket is not provided.
Deep space is not for fools
Alexander milkus, the editor of the education Department of KP Continue reading
By the end of XX century the mankind will be able to send a manned expedition to the planet Mars. The Soviet Union, the United States and other countries could combine resources to implement joint flight. In 1969 was declared a long-term program of the Soviet Union in the field of manned flights in which was planned the creation of orbital stations and laboratories with departing crews as the primary means of extensive exploration of outer space. They will be the “spaceports in space,” launch pads for flights to other planets. There will be large scientific laboratory for research into space technology and biology, medicine and Geophysics, astronomy and astrophysics.
Academician B. N. Petrov, at that time Chairman of the Council at the USSR Academy of Sciences on international cooperation in the exploration and use of outer space “Intercosmos”, noted that orbital space platforms will carry out the final Assembly of the spacecraft systems to conduct training classes of astronauts, which will be used to space conditions and to participate in the Assembly and testing of interplanetary ships.
In the Soviet Union there is a program capable of deducing in space of the modules of spacecraft and build space stations in earth orbit. Continue reading