solar system
what is the last planet of our solar system called???
Neptune
What is the highest capital in the world
New Delhi, India
What aspect of the movement of the Earth’s oceans is caused by the moon’s gravity?
Tides
How big is the Milky Way Galaxy?
100,000 light years in diameter
What is the Sun’s Schwarzschild radius, and why is it relevant even though the Sun is not a black hole?
The Sun’s Schwarzschild radius is about 3 km. It’s the radius at which the Sun’s mass would need to be compressed to form a black hole. It’s relevant in astrophysics for understanding gravitational effects and escape velocities.
How many planets are in our solar system?
8
What is the largest desert by area?
The Antarctic Polar Desert
Which planet in our solar system has the most known moons?
jupiter
What is the velocity with which the Milky Way as a whole is moving?
It is moving at a velocity of approximately 600 km per second
How long does it take for energy produced in the Sun’s core to reach its surface, and why?
It can take tens of thousands to hundreds of thousands of years because photons undergo a random walk—constantly scattering off particles in the dense radiative zone before reaching the convective zone and then the surface.
What is the tallest mountain in the solar system?
Olympus Mons on Mars
What is the highest navigable lake?
Lake Titicaca
What is the name of the astronomical event when the moon moves into the Earth’s shadow?
Lunar ecsplise
Where is Earth in the Milky Way Galaxy
Earth is located in one of the spiral arms of the Milky Way (called the Orion Arm)
Why does the Sun’s corona have a much higher temperature than its surface, and what is the leading theory explaining this?
The corona reaches 1–3 million K, far hotter than the Sun’s surface (~5,778 K). The leading explanation is magnetic reconnection and wave heating, where magnetic field lines release energy into the corona.
Which planet is known as the "Red Planet"?
Mars
What is the deepest freshwater lake?
Lake Baikal,
Who was the first human to walk on the moon?
Neil Armstrong
What is the oldest star in the Milky Way Galaxy?
Methuselah Star
What is the primary nuclear reaction powering the Sun, and what particles are produced in the process?
the Sun’s main energy source is the proton-proton (pp) chain reaction, where hydrogen nuclei fuse to form helium. This process produces helium-4 nuclei, positrons, neutrinos, and gamma-ray photons.
How far is our solar system from the nearest bright star cluster?
150 light years away.
What is the deepest known point in Earth’s oceans and its best current depth estimate?
Challenger Deep in the Mariana Trench
Which planet has the largest moon in the solar system?
Jupiter has the largest moon, Ganymede.
How many stars are in the Milky Way Galaxy?
500billion
What stage of its life is our Sun in now?
4.6 billion years old