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Cross Word ACROSS 1. The name of a series of automatic interplanetary stations that have been launched in the direction of the moon (4) 3. Military satellites used for detecting hot fumes emanating from ballistic missiles (5) 4. Control of this axis enables the satellite's antenna and sensors to point towards earth (3) 6. Launched at the end of the last century SOHO detected the source of the _____ wind (5) 8. Satellites of this series have performed a wide range of applications beneficial for the country (3) 9. A cryogenic fuel that along with liquid oxygen as oxidiser produces high specific impulse (3) 10. The points at which the satellite crosses the equatorial plane of the earth (5) 12. Satellites of this series helped in predicting the weather related to El Nino (4) 14. The point at which a satellite is farthest from the earth (6) 16. The square of the time period of a satellite varies as the ______ of its semi-major axis (4) 17. _____ satellites operate in the range of 7,000 to 12,000 km above the earth (3) 19. The length of the semi-major axis of the earth around the sun is one _______ (2) 20. This sun probe detected electrified gas flow around magnetic barriers on the sun (4) 21. This axis keeps the satellite steady in the up and down direction (5) 23. Satellites of this series provided repetitive coverage of most of the land surface (7) 26. The indigenous IRS-P4 is the first of a series of ________ satellites (5) 27. ______ followed the ASLV missions (4) 29. The first person to set foot on our nearest celestial neighbour (4) 30. Kepler's equation expresses ______ Anomaly as a function of Eccentric Anomaly (4) 15. Measures images of the full earth (4) 17. The Soviet automatic interplanetary station ______-1 was launched towards the Red Planet (4) 18. __ Transfer Orbit or HTO consumes satellite's minimum power to go from one orbit to another (7) 22. He proposed the revolutionary concept of the number of satellites required for worldwide coverage (6) 24. Short for Ariane Passenger Payload Experiment (5) 25. The number of satellites required in geosynchronous orbit (5) 26. The ______ cameras aboard Oceansat collect data on chlorophyll, phytoplankton blooms, atmospheric aerosols and suspended sediments (3) 28. ___________ satellites operate below the Intermediate Circular Orbit at an altitude of 4001,000 km (3) Contributed by Dr. S.K. Gurtu, 80/158, Mansarovar, Jaipur 20. DOWN 1. Short form of a cryogenic oxidizer that along with liquid hydrogen as fuel produces high specific impulse, an important parameter for rocket power (3) 2. It was set up in 1958 as a successor to the National Advisory Committee for Aeronautics (4) 3. This space station, meaning peace in Russian, has hovered above the earth for the longest time, and was helpful to several American astronauts in conducting space experiments (3) 5. European rocket launch site that has expendable launch vehicles for space launch (6) 7. The __________ Excursion Module, name Eagle, was used by American astronomers to land on the moon (5) 8. Satellites of this series were meant to provide telecommunications, television and meteorological services in India (5) 11. The Americans used powerful ________ rockets to place payloads in synchronous orbits (5) 13. Trajectory or path (5) Solutions to April 2012 Crossword 61 SCIENCE REPORTER, MAY 2012