Recently NASA rsquo s Great Observatories Program and New Frontiers Program were in news With refere...........

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Recently, NASA’s Great Observatories Program and New Frontiers Program were in news. With reference to

these programs, consider the following statements:

1. Juno spacecraft is venturing into the Kuiper Belt beyond Neptune’s orbit.

2. OSIRIS-Rex is currently orbiting asteroid Bennu and will collect a pristine sample from it.

3. Chandra Observatory is observing black holes, quasars and high temperature gases throughout the x-ray portion of the EM spectrum.

4. Spitzer telescope is observing the most violent physical processes in the Universe throughout the gamma ray portion of the EM spectrum.

Which of the statement(s) given above is/are correct?

1 and 2 only

2 and 3 only

2, 3 and 4 only

3 and 4 only

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Explanation:

Explanation:
New Frontiers Program is the strategy to explore the solar system with medium class spacecraft missions. It consists of the following missions:
1. New Horizons – is NASA’s mission into the Kuipler Belt beyond Neptune’s orbit. Kuipler Belt is a relic of solar system formation and consists of many icy planets like Pluto. It is studying the surface properties, geology, interior makeup and atmospheres of the ancient, icy mini-worlds in that vast region.
2. Juno – has been orbiting Jupiter and studying its gravitational and magnetic fields and also its atmospheric phenomena. Juno’ study will help to understand the history of our solar system.
3. OSIRIS-Rex – is currently orbiting asteroid Bennu and will spend two years mapping it before collecting a pristine sample and returning to earth in 2023. This sample will help scientists understand the planet formation and the origin of life, and aid in
understanding asteroid that can impact earth. Bennu contains natural resources such as water and metals and can be relied upon in future for econo0mic development.
4. Dragonfly – will visit Saturn’s richly organic moon Titan and is slated for a 2026 launch.

Great Observatories is a series of four space born observatories designed to conduct astronomical studies over different wavelengths. It consists of the following:
1. Hubble Space Telescope – observes the Universe at ultraviolet, visual and near- infrared wavelengths. It has helped in explaining star birth, star death and galaxy evolution.
2. Compton Observatory – no longer operational, was a gamma ray observatory that had collected data on some of the most violent processes in the Universe, characterized by their energies.
3. Chandra Observatory – is an x-ray observatory observing such objects as black holes, quasars and high temperature gases. It has increased our understanding of the origin, evolution and destiny of the Universe.
4. Spitzer Space Telescope – is observing the Universe in the infra red wavelengths. Many objects such as smaller stars, extrasolar planets and giant molecular clouds and other areas of space like centre of galaxies, newly forming planetary system are hidden from optical telescopes. Spitzer fills an important gap here.