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The Voyager spacecraft were launched by NASA in 1977. Voyager 2 was launched first, on August 20, and Voyager 1 followed on September 5. Both of them took off from Cape Canaveral in Florida. Their mission was to explore the faraway planets in the solar system. Now, they are travelling deep into space and sending back important information.

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Voyager 1 visited Jupiter in 1979 and Saturn in 1980. It took pictures of Jupiter’s Great Red Spot and found new moons. Voyager 2 also visited Jupiter in 1979, then Saturn in 1981. After that, it went to Uranus in 1986 and Neptune in 1989. Uranus and Neptune have not been visited by any other spacecraft since then.

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Voyager 1 & 2  Trajectories to the Outer Planets

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Voyager 1 left the solar system in 2012 and entered space between the stars. Voyager 2 followed later, in 2018. Voyager 1 is travelling toward the Ophiuchus constellation. Voyager 2 is heading toward the Sagittarius constellation. Both are still traveling and sending back information.

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1. Match the Terms:
Match the word on the left with the correct definition on the right.

1. Voyager

2. Termination Shock

3. Heliopause

4. Interstellar Space

5. Solar Wind

A. A boundary where the Sun’s energy stops and space particles from other stars begin.
B. A spacecraft launched to explore the solar system and beyond.
C. A stream of tiny particles that the Sun sends out into space.
D. The place where the solar wind slows down a lot before mixing with interstellar particles.
E. The empty space between stars in the universe.

2. True or False:
Read the sentences below and write "True" or "False" based on what you’ve learned.

1. Voyager 1 and Voyager 2 both left the solar system in 2018.

2. The heliopause marks the point where the Sun’s influence stops.

3. The termination shock is where the solar wind speeds up.

4. Interstellar space is located inside the solar system, between the planets.

5. Voyager 1 is heading toward the Ophiuchus constellation.

3. Fill in the Blanks:
Complete the sentences with the correct word from the list below.

(heliopause, termination shock, Voyager, interstellar space, solar wind)

1. The __________ is a region where the solar wind slows down as it reaches the edge of the solar system.

2. __________ is a spacecraft that travels beyond the planets to explore the outer regions of space.

3. Beyond the __________, the particles and energy come from other stars, not our Sun.

4. The Sun sends out tiny particles known as __________ that travel through the solar system.

5. The __________ marks the boundary where the Sun's influence ends and interstellar space begins.

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The termination shock is a place in space where the solar wind slows down a lot. The solar wind is a stream of tiny particles that the Sun blows out into space. At this point, the solar wind gets weaker because it meets particles from outside our solar system. This area is the start of a zone where the Sun’s particles mix with particles from space. It shows how far the Sun’s power reaches.

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The heliopause is the boundary where the solar wind from the Sun stops. It is the edge of the area that the Sun’s energy can reach. Beyond the heliopause, space is filled with particles and energy from other stars. It’s like the "bubble" around our solar system ends here. This is where interstellar space begins.

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Interstellar space is the area between the stars. It's a huge, empty space with very few particles or things in it. Even though it looks empty, it’s not completely empty—there are tiny particles and radiation floating around. This space is beyond our solar system, where the planets and the Sun's influence end. It's a part of the universe that connects different star systems.

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VOYAGER MISSION STATUS LIVE

https://science.nasa.gov/mission/voyager/where-are-voyager-1-and-voyager-2-now/

NASA DEEP SPACE NETWORK LINK

https://eyes.nasa.gov/apps/dsn-now/dsn.html

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LAUNCH KILŐ

SOLAR SYSTEM NAPRENDSZER

SPACECRAFT ŰRJÁRMŰ

CONSTELLATION CSILLAGKÉP

SOLAR WIND NAPSZÉL

PARTICLE RÉSZECSKE

BOUNDARY HATÁR

INTERSTELLAR SPACE CSILLAKÖZI TÉR

STAR SYSTEM CSILLAGRENDSZER