u/mbisdivo

Hello, I’ve chosen the asteroid Bennu as the topic for my Baccalaureate oral exam(France's final exam). I’m posting this to find out more about Bennu and also to see if anyone can convince me to change my mind if my topic is completely rubbish or not very interesting.

Here’s what I’ve got so far:

Biology: rocks (dating?), amino acids (forms of life)Physics and Chemistry: trajectory, chemical constituents, celestial mechanics

• The asteroid Bennu = a near-Earth asteroid 500 m in diameter, of the carbonaceous type (rich in carbon), dating back 4.5 billion years
• The OSIRIS-REx mission launched in 2016, sample collection in 2020, return to Earth on 24 September 2023 with 122 g of material
• launch on 8 September 2016, requiring the trajectory to be synchronised with that of Bennu, which orbits at 100,000 km/h. Flyby of Earth in September 2017 to adjust the trajectory. Placed into orbit around a small body with very low gravity (gravity there is 100,000 times weaker than on Earth)
• Experiment with amino acids = can life be created from amino acids?
• Miller–Urey experiment “primordial soup of life"
• RNA may have formed before DNA
• The glycine on Bennu may not have formed in the presence of liquid water, but rather through the aggregation of ice exposed to radiation in the early days of the outer solar system.

Bonjour je suis élève de Terminale qui révise pour le bac.

En révisant les fluides, je retrouve sur plusieurs exercices la relation de Bernoulli, bien que je m'aide de mon cours je reste bloquée en ne savant pas comment l'utiliser et mettre en relation. Que faire ?

Je vous remercie en avance