12 years

The shape of planetary orbits follows from the observed fact that the force of gravity between two objects depends on the square of the distance between them. Ellipses are closed so the planets we see in elliptical orbits stick around.

An orbit is a regular, repeating path that one object in space takes around another one. An object in an orbit is called a satellite. A satellite can be natural, like Earth or the moon. Many planets have moons that orbit them.

Jupiter twin orbits a twin of our sun – Exoplanet Exploration: Planets Beyond our Solar System.

Our Sun does wobble because of the planets in orbit about it, but the wobble is VERY tiny and complicated (remember, our Sun has 9 small-ish planets, not one big one).

In order to turn Jupiter into a star like the Sun, for example, you would have to add about 1,000 times the mass of Jupiter. So, Jupiter cannot and will not spontaneously become a star, but if a minimum of 13 extra Jupiter-mass objects happen to collide with it, there is a chance it will.

Jupiter would be massive enough to become a red dwarf – a small, cool, hydrogen-burning star. Because Jupiter is four times further away from us than the Sun, 588 million kilometers away, the Earth wouldn’t get much heat from it. By and large, Jupiter turning into a red dwarf wouldn’t change anything for life on Earth.

If it exploded, the energy from the explosion would throw the traditional outer and inner solar system planets into a free-for-all, sending the larger gas giants either towards the sun or flinging them out of the solar system altogether.

So, the answer to your question is NO. No rocket would be able to fly “through” Jupiter. Informatively, the probe Galileo was deployed to explore Jupiter and its moons. After a six year cruise from earth it reached Jupiter in end 1995.

Nothing could live on what passes for land on Venus; its smooth volcanic plains are a scorching hellscape hot enough to melt lead, where the temperatures exceed 800 degrees Fahrenheit. High in the clouds, however, the pressures and temperatures and acidity levels would be less intense — though still vile.

Earth

According to their system of classification, the Sun is known as a yellow dwarf star. So the Sun is at the higher end of this group. The official designation is as a G V star. Stars in the this classification have a surface temperature between 5,300 and 6,000 K, and fuse hydrogen into helium to generate their light.

As you may know, a white dwarf is the cinder of a star which used to be like the Sun. When a star has just become a white dwarf, it is hotter than 100,000 K (about 180,000 F). It then gradually cools — after many billions of years, it can become cooler than the Sun (which is about 6,000 K).

At the end of his life, a yellow dwarf star becomes a red giant and white dwarf. Transformed into carbon and oxygen, helium is exhausted in its turn and the star dies. The star then gets rid of its outer layers and center contracts into a white dwarf the size of a planet.