Video summary
The 18th International Olympiad on Astronomy and Astrophysics (IOAA) 2025 brought together over a decade of dedication from young minds and leaders to Mumbai, India, for a vibrant celebration of science and global friendship. The event kicked off with a formal press conference at the St. Regis hotel, where organizers shared the Olympiad's vision with the media before delegations arrived and settled in. As the first full day unfolded, participants registered and gathered for a grand opening ceremony at the Lotus Ballroom, which highlighted cultural unity alongside scientific inquiry. The atmosphere was filled with enthusiasm and anticipation as students checked into the Western Pool area while leaders prepared for the rigorous discussions ahead, setting a tone of pride that extended beyond the competition itself.
The core academic journey began on day four with the theory examination, challenging students to demonstrate their deep understanding of astronomy and astrophysics, followed by an observational exam on day five where they analyzed celestial objects using practical skills. Between these intense testing periods, leaders engaged in critical discussions regarding the upcoming data analysis sessions and ensured that all translated materials were accurate. The schedule was balanced with enriching excursions, such as visits to the Indian Institute of Technology Bombay and the Tata Institute of Fundamental Research, allowing students to explore cutting-edge research while strengthening global bonds through shared meals and conversations. Day six further enriched this experience with a visit to the iconic Chhatrapati Shivaji Maharaj Vastu Sangrahalaya museum and a special lecture at the University of Mumbai, offering fresh insights into India's contributions to space science.
As the competition phase concluded, the event shifted toward immersive experiences and final assessments, culminating in the planetarium exam at the Neu Planetarium on day eight, which combined wonder with rigorous testing in an interactive environment. The following days offered a blend of leisure and responsibility, with students enjoying an adventurous trip to Imaga theme park while leaders finalized moderation duties and data analysis sessions. This balance ensured that participants could relax after their intense academic journey before gathering for the closing ceremony at the magnificent Grand Theater of the Nita Mukesh Ambani Cultural Center on day eleven. The finale featured dances, music, and performances that united the world under one roof, celebrating diversity and honoring the friendships forged over ten unforgettable days.
Ultimately, IOAA 2025 proved to be more than just a competition; it was a transformative journey marked by meaningful exchange and a shared commitment to inspiring future astronomers and astrophysicists. As participants returned home, they carried with them not only medals but also lasting memories of India, the global friendships they built, and renewed dreams to pursue under the same night sky. The spirit of curiosity, collaboration, and discovery that shone brightly throughout the event will continue to influence these young scientists as they move forward in their careers. By chasing stardust and asking questions together, the Olympiad successfully bridged cultures and disciplines, leaving a legacy that extends far beyond the closing ceremony.
Read the full video transcript
Welcome to the 18th International
Olympiad on Astronomy and Astrophysics
IOA 2025 hosted here in the vibrant city
of Mumbai, India. Over 10 days, bright
young minds and dedicated leaders from
around the world came together to
celebrate science, discovery and global
friendship. Day one, IOA 2025 hosted a
formal press conference at the St.
Regious sharing the vision, goals and
global impact of the Olympiad with the
media. As the sun set over Mumbai,
delegations began arriving. Students
checked in at the Western Poai while
leaders gathered at the St. Regis. Warm
smiles, enthusiastic welcomes, and the
anticipation of the journey ahead filled
the atmosphere. The day closed with a
sense of pride as science reached beyond
the competition into the wider world.
Day two. The first full day began with
registration and orientation. After a
hearty lunch, all participants departed
for the grand opening ceremony at the
Lotus Ballroom of the Geo World
Convention Center. The ceremony was a
celebration of culture, science, and
international unity. As the evening
concluded with dinner, excitement for
the competitions ahead grew stronger.
Day three, students embarked on an
excursion to the prestigious Indian
Institute of Technology, Bombay,
exploring cuttingedge research and
meeting inspiring scientists.
Meanwhile, leaders at St. Regis engaged
in the discussions pertaining to the
theory examination and ensuring that
carefully translated and accurate papers
were ready for the next day. The day
ended with reflections, conversations,
and shared meals, strengthening global
bonds.
Day four.
For students, the day began with the
highly anticipated theory examination,
testing their deep understanding of
astronomy and astrophysics.
Leaders continued their discussions on
the upcoming observational examination
sessions. The evening carried a quiet
sense of accomplishment as participants
prepared for the challenges ahead. Day
five, students faced the observation
exam, analyzing celestial objects and
demonstrating practical skills. Leaders
enjoyed an excursion through South
Mumbai, exploring heritage sites and
visited the renowned Tata Institute of
Fundamental Research. It was a day where
science met culture, creating lasting
impressions. Day six. On this day,
students headed into the heart of South
Mumbai at Chhatrapati Shivaji Maharaj
Vasu Sangraallaya, Mumbai's iconic
museum. Later, they visited University
of Mumbai where they attended a special
astronomy lecture gaining fresh insights
into India's contributions to space
science. Leaders meanwhile gathered at
the St. Regis for the IBM data analysis
session. Day seven,
students assembled once again for the
demanding data analysis exam, putting
theory into practice as they tested
their analytical skills.
Meanwhile, leaders explored the Neu
Planetarium, discovery of India and
Chhatrapati Shivaji Maharaj Vasu
Sangraallaya.
Day eight. One of the most exciting
parts of IOA awaited. The planetarium
exam at the Neu Planetarium.
Students experienced astronomy in an
immersive environment combining wonder
with rigorous testing. Their final exam
marked the end of an intense academic
journey culminating in a vibrant
culturrich celebration at the Western.
An evening alive with energy, laughter,
and lasting memories.
Dances, music, and performances brought
the world together under one roof,
celebrating diversity and unity. Day 10.
After a day of rest, the students set
out for an adventurous experience at
Imaga theme park filled with fun and
laughter. Leader, on the other hand,
remained at the St. Regious for intense
moderation and the final IBM session. It
was a day that blended science, leisure,
and responsibility, preparing everyone
for the closing moments of IOA 2025.
Day 11. The Olympia journey culminated
at the magnificent Grand Theater of the
Nita Mukesh Amani Cultural Center.
Delegations gathered for the closing
ceremony, celebrating achievements,
awarding medals, and cherishing
friendships forged over 10 unforgettable
days. The spirit of curiosity,
collaboration, and discovery shone
brightly as IOA 2025 drew to a close.
IOA 2025 was not just a competition. It
was a journey marked by learning,
meaningful exchange, and a shared
commitment to inspiring future
astronomers and astrophysicists.
As the participants return home, they
carry with them memories of India, the
friendships they built, and the dreams
they will continue to pursue under the
same night sky. Until we meet again,
keep chasing stardust and questions.