Explanation

According to a study, Venus appears to be more volcanically active than ever before.

Radar images acquired by NASA spacecraft have indicated large amounts of lava in Venus' northern hemisphere.

Note: NASA is the space agency of the USA.

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Explanation

• ISA (Iranian Space Agency) was established in 2004.
• The Iranian Space Agency is responsible for the national space program of Iran.

Explanation

• ESA (European Space Agency) is an intergovernmental organization.
• It dedicated to the exploration of space, with 22 member states from Europe.
• It was established in 1975.

Explanation

• KARI (Korea Aerospace Research Institute) is the space agency of South Korea.
• KARI was established in 1989.
• It is responsible for the development of spacecraft, launch vehicles, and satellites.

Explanation

• SUPARCO (Space and Upper Atmosphere Research Commission) is the space agency of Pakistan.
• It was established in 1961.
• SUPARCO is responsible for the national space program of Pakistan and has developed the capacity for a national satellite program.

Explanation

• CNSA (China National Space Administration) is a government agency of the People's Republic of China.
• It was established in 1993.
• It is responsible for civil space administration and international space cooperation.

Explanation

• RKA (Roscosmos) is the space agency of Russia.
• It was established in 1992.
• RKA is the Russian Federal Space Agency, formerly the Soviet Space Program, which launched Sputnik 1, the first artificial satellite, and sent Yuri Gagarin, the first human, to space.
• Roscosmos is headquartered in Moscow.

Explanation

• Meteoroids are small rocky particles that float in outer space.
• They can range in size from a grain of sand to a boulder.
• When a meteoroid enters Earth's atmosphere, it becomes a meteor (shooting star).
• It can potentially land on Earth as a meteorite.

Explanation

Comets are icy bodies that orbit the Sun, and they appear as a long hair-like strand due to their tail of gas and dust.

They consist of three main parts:

1. Nucleus: The central, solid part of the comet.
2. Coma: The cloud of gas and dust surrounding the nucleus.
3. Tail: The long, trailing cloud of gas and dust that follows the comet as it orbits the Sun.

Explanation

• Comets are the small broken pieces of ice, dust, and gases found beyond the orbits of Neptune and Pluto in the solar system.
• Comets originate from regions such as the Kuiper Belt and the Oort Cloud, where they are composed of volatile substances like ice and dust.