• 99.8 percent of asteroids have orbits between Mars and Jupiter.
• A comet’s tail
always points away from the sun.
• A Red Giant has a
low effective temperature (3000 to 4000 Kelvin) and a radius of around 100
times the Sun’s.
• Beads of light
visible around the rim of the moon at the beginning and end of a total solar
eclipse are called Baily’s Beads.
• Between 1979 and
1998, the farthest planet from the sun was Neptune.
• Biggest known
asteroid is Ceres.
• Heliocentric means
around the sun; geocentric means around the earth.
• Jupiter has a mass
greater than the combined masses of all the planets.
• Largest circular
storm in our solar system is found in Jupiter.
• Largest volcano in
the solar system is Olympus Mons found on Mars.
• Neil Armstrong
landed on the moon on 1969.
• Neptune’s moon
Triton has an ocean made of liquid Nitrogen.
• One Jupiter day is
equal to 9 hours 50 minutes.
• One Mercurian year
is equal to 88 Earth days.
• Only 0.001% of the
Sun’s mass has been converted into energy.
• Pluto has the most
eccentric orbit around the sun.
• Pluto’s moon is
called Charon.
• Spectral line
splitting due to the influence of magnetic fields is called Zeeman Effect.
• Taurus is the
brightest star in Aldebaran.
• The Andromeda galaxy
is spiral.
• The area between
Saturn’s two rings is called Cassini’s division.
• The constellation
Andromeda is also called the Chained Maiden.
• The first man to
classify stars according to their brightness was Hipparchus.
• The greatest
distance of a planet from the sun is called aphelion (A for Away). The smallest
distance of a planet from the sun is called perihelion (P for Proximal or
near).
• The Hertzsprung-Russel
Diagram directly compares temperature and luminosity of stars.
• The last planet
Voyager II visited is Neptune.
• The main component
of the atmosphere of Mars is Carbon Dioxide.
• The Milky Way galaxy
is 100,000 light years across.
• The nearest star to
the sun is Proxima Centauri, also known as Alpha Centauri.
• The only planet with
a day longer than its year is Venus.
• The only planet with
a moon almost as big and as heavy as the planet itself is Pluto.
• The only two planets
that do not have their moons or natural satellites are Venus and Mercury.
• The rapidly moving
stream of charged particles that is being driven away from the sun is known as
Solar Wind.
• The smallest planet
in our solar system is Pluto.
• The summer solstice
usually occurs on June 21.
• The sunspot cycle is
11 years.
• When three celestial
bodies are in a line or collinear, it is called a syzygy.
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