* Stars are incredibly hot: The surface temperature of even the coolest stars is thousands of degrees Celsius. No known spacecraft or material could withstand such heat.
* Stars are incredibly far away: The closest star to our Sun is Proxima Centauri, which is over 4 light-years away. Even at the speed of light, it would take over four years to reach it. Current spacecraft technology is far from capable of interstellar travel.
* Stars are massive and gaseous: Stars are giant balls of hot gas, not solid objects. Landing on them wouldn't be possible.
So, while we've explored planets and moons in our solar system, landing on a star is purely in the realm of science fiction.