The sea wasp box jellyfish is perhaps the most deadly variety. This translucent sea-dweller may not look all that menacing, but it is the most venomous animal on planet Earth. Box jellyfish are deadly to many different animals, not the least of all, us. If you get stung by one of these animals, you are very likely to die.
Earth and Mars Conjunction: On the opposite end of the scale, Mars and Earth can be 401 million km apart (249 million miles) when they are in opposition and both are at aphelion. The average distance between the two is 225 million km. When Mars and Earth are at their closest, you have your launch window.
The perihelion for Mars is 207 million km, or 1.38 astronomical units (1 AU is the average distance from the Earth to the Sun). The most distant point on an orbit is called aphelion. The aphelion for Mars is 249 million km, or 1.67 AU.The average distance from Mars to the Sun is 228 million km, or 1.52 AU.Astronomers call this the semi-major axis. Mars actually has the second most eccentric orbit of all the planets in the Solar System, right after crazy Mercury. The wide ranging distances have a significant impact on its seasons.he aphelion for Mars is 249 million km, or 1.67 AU. The average distance from Mars to the Sun is 228 million km, or 1.52 AU. Astronomers call this the semi-major axis.