WASP-121b, an already unusual planet, might have a remote origin that explains some of its peculiar properties—from iron rain ...

Jupiter's atmosphere is mostly composed of hydrogen and helium, with small amounts of ammonia, methane, water vapor and other gases. These latter components condense at different levels to form ...

WASP-121b is unlike anything in our Solar System. This giant planet orbits its star so closely that it completes a full orbit ...

Jupiter, the largest planet in the solar system, was 2 to 2.5 times bigger in its earlier life, according to new research. Credit: NASA / JPL-Caltech / SwRI / MSSS / Tanya Oleksuik Jupiter, the ...

Jupiter is our solar system's biggest planet by far. It used to be twice as large: Study A recent study found that Jupiter was once twice the size that it is now, making it big enough to swallow ...

Jupiter's atmosphere is mostly composed of hydrogen and helium, with small amounts of ammonia, methane, water vapor and other gases. These latter components condense at different levels to form ...

Hill used the absorption bands of methane (619 nm) and ammonia (647 nm), both well-known features in Jupiter's visible spectrum, to calculate the abundance of these gases above Jupiter’s cloud tops.