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3 days ago · Neptune, third most massive planet in the solar system and the eighth and outermost planet from the Sun. Neptune has 14 moons, only two of which were discovered before Voyager 2’s visit in 1989, and a system of rings, which were unconfirmed before Voyager.
- Neptune was discovered on September 23, 1846. It is the second planet to be found using a telescope. Although Johann Gottfried Galle and Heinrich L...
- Neptune has 14 moons (natural satellites). Before Voyager 2's flyby of the planet, Neptune's only known moons were Triton and Nereid. Neptune's moo...
- Neptune’s outer atmosphere is composed predominantly of hydrogen and helium, contributing to 98 percent of the atmospheric molecules. Most of the r...
- Neptune is the only giant planet that is not visible without a telescope. It has an apparent magnitude of 7.8 and is approximately one-fifth as bri...
- Neptune’s color is a very vivid, bright blue, presumably an effect of the presence of methane and an unidentified atmospheric gas. With a small tel...
2 days ago · Pisces (19 February – 20 March) Neptune retrograde 2024 is in the house of Pisces. Hence, it majorly affects the identity of this water sign. Pisceans will closely examine how they are looking at themselves, their identity and the way they are being presented to the world. They might also battle some existential questions but will come out of ...
3 days ago · The atmosphere. Like the other giant planets, Neptune’s outer atmosphere is composed predominantly of hydrogen and helium. Near the one-bar pressure level in the atmosphere, these two gases contribute nearly 98 percent of the atmospheric molecules. Most of the remaining molecules consist of methane gas.
5 days ago · In 2002–03 five additional tiny moons, estimated to be about 15–30 km (9–18 miles) in radius, were discovered in Earth-based observations. These are irregular, having highly eccentric orbits that are inclined at large angles to the planet’s equator; three orbit in the retrograde direction.
3 days ago · Neptune is an ice giant planet, primarily composed of water, methane, and ammonia, and has a deep, turbulent atmosphere with strong winds and large storms, including the famous Great Dark Spot and the smaller Dark Spot. The planet has a day length of approximately 16.1 Earth hours and an orbital period of 165 Earth years.
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2 days ago · An international team led by UNIGE, UNIBE and PlanetS has shown the existence of two distinct populations of sub-Neptunes, resolving a debate in the scientific community.
2 days ago · The most common are those between the radius of the Earth (around 6,400 km) and Neptune (around 25,000 km), known as ''sub-Neptunes''. It is estimated that 30% to 50% of sun-like stars contain at ...