Current Affairs - Science

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Exercise :: Science - Latest Current Affairs

  • Science - Latest Current Affairs
1. 

What is the name of the third transiting planet in the Kepler-47 Circumbinary System discovered by astronomers from San Diego State University?

A. Kepler-47d
B. Kepler-47c
C. Kepler-47b
D. Kepler-47a

Answer: Option A

Explanation:

A group of researchers, led by astronomers at San Diego State University, by using data from NASA's Kepler Space Telescope, detected the new Neptune-to-Saturn size planet orbiting between two previously known planets Kepler-47b and Kepler-47c. This new planet named as Kepler-47d. The research was recently published in the Astronomical Journal.According to a new study, Kepler-47d is about seven times larger than Earth and also the largest of the three planets in the Kepler-47 circumbinary system. The Kepler-47 system is approximately 3.5 billion-years-old and it is 3,340 light years away in the direction of the constellation Cygnus.

2. 

Who has discovered an Earth-sized planet, HD 21749b using Transiting Exoplanet Survey Satellite?

A. ISRO
B. NASA
C. SpaceX
D. JAXA

Answer: Option B

Explanation:

NASA's the Transiting Exoplanet Survey Satellite (TESS) has discovered an Earth-sized planet, HD 21749b and a "sub-Neptune" world, revolving around the star, HD 21749. The star lies 53 light-years from Earth. The research study has been published on 15th April, 2019 in 'The Astrophysical Journal Letters'. TESS was launched to Earth orbit in April 2018 on a SpaceX Falcon 9 rocket. One tool termed as 'Planet Finder Spectrograph' (PFS) on the 'Magellan II telescope' in Chile helped to confirm the planetary nature of the TESS signal and measure the mass of HD 21749b. HD 21749b is about 23 times heavier and 2.7 times wider than Earth. It is gaseous, has a substantial atmosphere but not as puffy as Uranus and Neptune. HD 21749b has an orbital period of 36 Earth days.

3. 

Name the vehicle which received approval from cabinet for continuation of its Phase 4 programme that consists of 5 rocket flights during 2021-2024?

A. SLV
B. ASLV
C. PSLV
D. GSLV

Answer: Option D

Explanation:

The Union Cabinet, chaired by the Prime Minister Shri Narendra Modi, has given the approval for ongoing GSLV continuation programme Phase-4 that consists of 5 GSLV rocket flights during 2021-2024.The GSLV Programme- Phase 4 will enable the launch of 2 tonne class of satellites for geo-imaging, navigation, data delay communication and space sciences. The total fund requirement for the phase 4 programme is Rs 2,729.13 crore. This amount includes the cost of 5 Geosynchronous Satellite Launch Vehicles (GSLVs), addition of essential facility, programme management, launch campaign and extra funds required to meet the scope of the programme.

4. 

Which of the following Israeli lunar Mission crashed on the Moon?

A. LADEE
B. Beresheet
C. Juno-1A
D. Ofek-11

Answer: Option B

Explanation:

Israeli lunar mission Beresheet crashed on the Moon. Beresheet crashed during a landing attempt. It is said that the spacecraft had problems with its main engine during its descent that left it unable to slow down in time before it smashed into the lunar surface. Beresheet was an Israeli mission launched by a partnership between nonprofit SpacelL and government-owned aerospace company Israel Aerospace Industries. It is the World's first privately funded lunar Mission. It was a demonstrator of a small robotic lunar lander. Its aims included promoting careers in science, technology, engineering, and mathematics (STEM); and landing its magnetometer and laser retroreflector on the Moon. Beresheet lander had carried a science instrument provided by NASA, a retroreflector instrument scientists would have used to make precise measurements of the distance between Earth and the moon.

5. 

Name the telescope, which is used by astronomers to capture the first image of Black Hole?

A. Event Horizon Telescope
B. Fermi Gamma-ray Space Telescope
C. Hard X-ray Modulation Telescope
D. Lunar-based ultraviolet telescope

Answer: Option A

Explanation:

Astronomers Captured the First Image of a Black Hole which was a halo of dust and gas, tracing the outline of a colossal black hole at the center of the galaxy M87 (Messier 87) with the help of The Event Horizon Telescope (EHT) observations. Black Hole.Black holes were first predicted by Einstein's theory of relativity and these are the extreme cosmic objects, containing incredible amounts of mass within a tiny region.The galaxy is 55 million light-years away from Earth.