Which of the following factors primarily determines the frequency of launch windows for a lunar mission?

The alignment of the Earth, the satellite, and the target body

The distance between the Sun and the Moon

The rotation speed of the Earth on its axis

The atmospheric density at the launch site

What is the primary reason for the complexity of launching a spacecraft to the moon's south pole?

The need for specific north-south orbital planes and solar lighting conditions

The lack of communication satellites near the lunar poles

The extreme distance compared to the lunar equator

The high gravitational pull of the lunar poles

Daily

250 words

7/10
Rating

26 August 2026

Space exploration and India's achievements

The topic provides critical data on India's space sector performance, economic challenges, and technological constraints, which are directly relevant to GS3 questions on space achievements and industrial policy.

Notes

Historical context: Indian space program initially served as a symbol of technological competency and national prestige during the 20th century.
Current status: Space infrastructure is now essential for navigation, banking, weather forecasting, and defense.
Economic performance: A 2025 analysis indicates India's cost to launch one kilogram into low-earth orbit is $13,302, significantly higher than the global average of $3,868.
Operational challenges: India conducted only five launches in 2025 against a projection of 30, affecting reliability and market competitiveness.
Private sector reliance: Indian startups and heavy payloads (e.g., GSAT-N2) are increasingly utilizing international launch providers like SpaceX due to capacity constraints.
Launch windows: These are specific periods determined by the alignment of the Earth, satellite, and target body to minimize fuel consumption.
Lunar mission constraints: Missions to the moon's south pole require specific north-south orbital planes and solar lighting conditions, limiting the frequency of launch windows.
Orbital mechanics: The moon's orbit is tilted 5.1° relative to Earth's, and the moon's equator is tilted 1.5° relative to Earth's, complicating trajectory planning.

Part of a longer story

This is day 2 of 2 in India's space launch cost efficiency, which has been running since 16 August 2026. Reading it whole is usually worth more than reading today alone — the exam asks how something developed.

Questions

Analyze the transition of the Indian space sector from a symbol of national prestige to a critical component of economic infrastructure. What structural challenges currently impede its global competitiveness? 150 words

Attempt this — 150 words in 8 min

0 / 150 words 8:00
Discuss the significance of orbital mechanics and launch windows in the success of lunar exploration missions. How do these technical constraints influence the planning and execution of international space programs? 250 words

Attempt this — 250 words in 11 min

0 / 250 words 11:00

Prelims

Which of the following factors primarily determines the frequency of launch windows for a lunar mission?

What is the primary reason for the complexity of launching a spacecraft to the moon's south pole?

Syllabus

Topics

Sources

250words.in · https://250words.in/daily/2026-08-26/space-exploration-and-india-s-achievements