Daily Current Affairrs Update: 30 JAN 2023

Shukrayaan I

• Indian Space Research Organisation’s (ISRO) Venus mission, Shukrayaan I may be postponed to 2031. ISRO’s Venus mission was expected to be launched in December 2024.
• Both the U.S. and the European space agencies have Venus missions planned for 2031 — VERITAS and EnVision, respectively — while China may launch around 2026 or 2027.

What Causes the Delay?

• ISRO had originally planned to launch Shukrayaan I in mid-2023 but the pandemic pushed the date to December 2024.
• Other ISRO missions, including Aditya L1 and Chandrayaan III, have also been affected by manufacturing delays and commercial launch commitments.
• Optimal launch windows from Earth to Venus occur once around every 19 months. This is why ISRO has ‘backup’ launch dates in 2026 and 2028 should it miss the 2024 opportunity.
• But even more optimal windows, which further reduce the amount of fuel required at liftoff, come around every eight years.
• Right now the 2031 window is considered very good by the experts.

What is Shukrayaan I Mission?

• The success of Chandrayaan and Mangalyaan has pushed the ISRO to plan more ambitious missions for the future like Gaganyaan and Shukrayaan.

Experiments planned include:

• An investigation of the surface processes and shallow sub-surface stratigraphy,
• Active volcanic hotspots and lava flows, studying the structure, composition, and dynamics of the atmosphere, and
• Investigation of solar wind interaction with the Venusian Ionosphere
• The satellite is planned to be launched onboard the GSLV Mk II rocket.

What is Venus

• It is named after the Roman goddess of love and beauty. It is the second planet from the Sun and sixth in the solar system in size and mass.
• It is the second brightest natural object in the night sky after the Moon.
• Unlike the other planets in our solar system, Venus and Uranus spin clockwise on their axis.
• It is the hottest planet in the solar system because of the high concentration of carbon dioxide which works to produce an intense greenhouse effect.
• Venus has been called Earth’s twin because of the similarities in their masses, sizes, and densities and their similar relative locations in the solar system.

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