A space probe is launched from Earth into a Hohmann transfer orbit to study an asteroid. The asteroid moves in a circular orbit around the Sun at a distance of 4 AU. Assuming Earth's orbit is also circular with a radius of 1 AU, calculate the time (in years) required for the probe to travel from Earth to the asteroid. (NSEA inspired)
(A) 1.25 years
(B) 1.98 years
(C) 2.5 years
(D) 3.95 years
(A) 1.25 years
(B) 1.98 years
(C) 2.5 years
(D) 3.95 years
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The right ascension and declination of a star are RA = 06 h 00 m and Dec = -30ยฐ. On a particular day, the star culminates at the local meridian at 20:00 hours local time. What will be its approximate right ascension when it culminates at 22:00 hours local time a month later? (NSEA-2019)
(a) 4 h, 00 m
(b) 6 h, 00 m
(c) 8 h, 00 m
(d) 12 h, 00 m
(a) 4 h, 00 m
(b) 6 h, 00 m
(c) 8 h, 00 m
(d) 12 h, 00 m
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๐ Global Astronomy & Astrophysics Challenge (GAAC) 2026 โจ
๐ Registrations are now OPEN!
๐น๏ธ An international team-based Astronomy & Astrophysics competition organized by STEM Astronomy Club.
๐น๏ธ Registration Deadline: 30 August 2026
๐น๏ธ Round 1 (Individual Qualification): 5 September
๐น๏ธ Round 2 (Team Challenge): 10 September
๐น๏ธ Results & Certificates: 15 September
Official Website: Click Here ๐
GAAC Telegram Channel: Click Here ๐
Registration Link: Click Here ๐
@AstronomyOCL
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A_Problem_Book_in_Astronomy_and_Astrophysics_IOAA_2007_2012.pdf
3.9 MB
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A planet orbits the Sun at a distance of 4.0 AU from the Sun. The orbital speed vโ and the time period T of the planet are approximately: (Section-2, NSEA 2023)
(A) vโ = 7.92 km/s
(B) vโ = 14.93 km/s
(C) T = 4 years
(D) T = 8 years
(A) vโ = 7.92 km/s
(B) vโ = 14.93 km/s
(C) T = 4 years
(D) T = 8 years
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www.spaceappschallenge.org
Space Apps Challenge
The NASA International Space Apps Challenge is a hackathon for coders, scientists, designers, storytellers, makers, builders, technologists, and innovators around the world to come together and use open data from NASA and its Space Agency Partners to createโฆ
๐ NASA Space Apps Challenge 2026 โ Registrations OPEN! โจ
๐น๏ธ ๐ Event: 14โ15 November 2026
๐น๏ธ ๐ Mode: Virtual & In-Person
๐น๏ธ ๐ Eligibility: Open to participants worldwide.
๐น๏ธ ๐ก Challenge: Build innovative solutions for Earth & Space using NASA's open data.
Official Website: Click Here
@AstronomyOCL
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Astronomy Principles and Practice - A.E. Roy, D Clarke.pdf
5.7 MB
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The Astronomy League - [OCL] - [NSEA, INAO, IOAA, USAAAO]
๐ Global Astronomy & Astrophysics Challenge (GAAC) 2026 โจ ๐ Registrations are now OPEN! ๐น๏ธ An international team-based Astronomy & Astrophysics competition organized by STEM Astronomy Club. ๐น๏ธ Registration Deadline: 30 August 2026 ๐น๏ธ Round 1 (Individual Qualification):โฆ
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aoac.aoguide.app
AOAC | AO Guide Astrophysics Challenge
The hardest, most fun astrophysics competition on the planet.
๐ AO Guide Astrophysics Challenge (AOAC) 2026 โ Pre-Registrations Now Open! โจ๏ธ
๐น The AO Guide Astrophysics Challenge (AOAC) is the rebranded successor to the Online Astronomy Competition (OAC), bringing an even bigger and better international astrophysics challenge.
โจ Who can participate?
๐น๏ธ High school students & first-year undergraduates
๐น๏ธ Completely FREE and held fully online
๐ Problems are curated by past IOAA medalists & participants, with cash prizes, exciting prizes, and prestigious titles for top performers.
๐ Last edition (OAC): 340+ participants from 44+ countries.
๐ Registration Link: Click Here
๐ฌ Official Discord Server: Click Here
@AstronomyOCL
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Which of Jupiter's Galilean moons has the largest volume? CNAO - 2018
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Astronomy As a Field - A Guide for Aspiring Astrophysicists.pdf
29.2 MB
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๐ Astronomy & Astrophysics Olympiads, Contests & Challenges [National + International] โจ๏ธ
๐ฎ๐ณ Indian Official Olympiad Stages
๐น National Standard Examination in Astronomy (NSEA)
๐น Indian National Astronomy Olympiad (INAO)
๐ฎ๐ณ Indian National Olympiads & Competitions
๐น National Astronomy & Science Olympiad (NASO)
๐น Indian Space Science Olympiad (ISSO)
๐น National Space Science Olympiad (NSSO) - Synodic Space Labs
๐น๏ธ National Space Science Olympiad (NSSO) - EHF
๐บ๐ธ USA Olympiads & Competitions
๐น USA Astronomy & Astrophysics Olympiad (USAAAO)
๐น Johns Hopkins Annual Physics Fair (Astronomy Events)
๐ค Team Competitions & Challenges
๐น American Rocketry Challenge (TARC)
๐น NASA Student Launch Challenge (NSLC)
๐น NASA Human Exploration Rover Challenge (HERC)
๐น NASA International Space Apps Challenge
๐น European Space Agency CanSat Competition (ESA CanSat)
๐น National Space Society Gerard K. O'Neill Space Settlement Contest (NSS Space Settlement Contest)
๐น Global Astronomy & Astrophysics Challenge (GAAC)
๐ International Olympiads, Contests & Challenges
๐น International Olympiad on Astronomy & Astrophysics (IOAA)
๐น Online Astronomy & Astrophysics Olympiad (OAAO)
๐น International Astronomy & Astrophysics Competition (IAAC)
๐น Open World Astronomy Olympiad (OWAO)
๐น National Astronomy STEM & Astrophysics Competition (NASAC)
๐น Online Astronomy Competition (OAC)
๐น Olympiad on Astronomy & Astrophysics Challenge (OAAC)
๐น International Astronomy & Astrophysics Expedition (IAAX)
๐น Asian Pacific Olympiad on Astronomy & Astrophysics (APOAA)
๐น International Aerospace Olympiad (IAO)
๐น Astro Pi Challenge
๐น National Astronomy Challenge
๐น Regeneron International Science and Engineering Fair (ISEF) (Astronomy & Space Science categories)
@AstronomyOCL
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Forwarded from Group Help
๐ NASA Space Settlement Design Contest 2026 โ Registrations Open! ๐ฐ๏ธ๏ปฟ
The NASA Space Settlement Design Contest 2026, organized by the National Space Society (NSS) in cooperation with NASA, invites students to design a self-sustaining space colony through a technical research paper. โจ๏ธ
๐น Eligibility: Grade 6โ12 students & Undergraduates๏ปฟ
๐น Participation: Individual or Teams (2โ5 / 6+)
๐น Mode: ๐ Online
๐น Submission: Technical Research Paper (PDF)
๐น Deadline: 15 February 2027
๐ Top participants can earn:
๐น๏ธ Official NASA & NSS Certificates
๐น๏ธ Invitation to present at ISDC 2027 (Chicago)
๐น๏ธ Top entries archived by NASA Ames Research Center
๐น๏ธ Opportunity to meet astronauts & aerospace leaders
@AstronomyOCL
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