Top Tweets for #PlanetTuesday
#PlanetTuesday
Due to the lack of magnetic field, Mars has no magnetosphere. So, the solar wind can interact directly with the ionosphere. As a consequence, the density of the atmosphere decreases due to the stripping of particles from the outermost part of the atmosphere.
#PlanetTuesday
There are three different layers in the martian atmosphere. The closer to the surface, the troposphere, has the largest change in temperature (about 60°). The intermediate of mesosphere, has the lowest temperature, about 100K. The temperatures at the thermosphere
#PlanetTuesday
Although Mars is half the size of the Earth they are very similar in other characteristics. They both have similar inclinations of their rotation axis to the ecliptic plane, so they both have seasons, although martian seasons last longer than ours because its year
#PlanetTuesday
If Venus is so well covered by clouds & cannot see its surface, how do we know what are in it? the answer is simple: radar techniques had been used in the cartography of the surface. So, we know there are well preserved craters as well as volcanoes.
#PlanetTuesday
Although there are no oceans on Venus, there are continents. Two of them, actually. One at the North (Ishtar Terra) & another at the South (Afrodite Terra). In them, and everywhere else, there are high mountains & volcanoes, which are active. Actually, most of
#PlanetTuesday
The similar density between Venus & Earth is an indication that they share the same internal structure: a core, a mantle & a crust. The core might be partially liquid. Although there might be no plate tectonic on Venus maybe because the crust is too strong for it,
#PlanetTuesday
We are talking about Venus & there is a great discovery on its atmosphere. Phosphane (PH3) is a gas & it was already detected in Jupiter & Saturn atmospheres. On Earth this gas is created due to organic matter but some extreme & exotic chemistry reaction might
#PlanetTuesday
Due to its thick atmosphere and the low rotation the temperature at the surface of Venus is very constant, actually it is said that Venus surface is isothermal. As there is no season there are not seasonal variations and only the altitude make temperature to
#PlanetTuesday
The most interesting characteristic of the upper atmosphere of Venus is the speed of the clouds there. These clouds rotate quicker than the planet itself! This is called super-rotation. The speed of the wind is about 360 km/h. The solar light help to produce +
#PlanetTuesday
Venus atmosphere has a very complex structure in temperatures, & composition. Near the surface the main component is CO2, density is 50 times the density of our own atmosphere at sea level, temperature is 735K & the pressure is 90 times the one on Earth surface.
#PlanetTuesday
Venus is called after the goddness of love in the Roman culture. Oh, yes! Venus is hot... very hot!! Due to its thick atmosphere & its composition the temperature in the surface is of 737 K (464 C). The reason? Venus atmosphere is composed mainly by greenhouse +
#planetTuesday
Mercury cannot hold an atmosphere because its low gravity. However, it has a so-called exosphere which contains H, He, O, Na, Ca & K, among other elements. The solar wind & radioactive decay of elements at the surface are the responsible of such exosphere.
#PlanetTuesday
Being so close to the Sun has its difficulties. The main one is the extreme temperatures Mercury suffers. During daytime they are of more than 400 C but at night it goes down to -173 C. The image shows such difference in temperature (false colours) 👇
#PlanetTuesday
Mercury is the smallest and the most close to the Sun planet in our Solar System. It is named after the roman god Mercury, who can run so fast he was the messenger of the rest of the gods. And planet Mercury travel very fast around the Sun. It takes only 88 days!
#PlanetTuesday
Hot Jupiters are called to those planets which are very big (as big as our Jupiter) but they revolve very close to their stars. Some authors think they're formed far from the star but migrate to its position while another think they are formed in situ.
#PlanetTuesday
According to their properties, the exoplanets can be classified as: Hot Jupiters, Cold Gas Giants, Rocky worlds, Ice giants & lava World. The first & the last revolve quite close to the star, but HJs are very large while LWs are small.
#PlanetTuesday
What is beyond Oort's cloud & the comets? is this the last frontier of our Solar System? we think the Solar System finish far beyond. We live inside a large bubble which have been carved by the solar wind: the heliosphere.
#PlanetTuesday
The coma changes its size as the comet moves towards the Sun. It is very large, about Jupiter size, until the comet is 1.5 AU far from the Sun, where the solar wind is strong enough to blow away its material, which is push into the tails.
Comet Holmes by Gil-Estel
#PlanetTuesday
The coma is the gas & dust which surround the main body of the comet. It is made of water & dust which is created by the solar radiation pressure. If the comet is too close to the Sun, dissapears because solar wind is strong enough to blow away all the materials.
#PlanetTuesday
The gas tail of a comet is pointing towards away from the Sun because the gas is pushed by the solar wind. As most of this gas is ionized, the gas tail will follow the magnetic field lines. The gas tail is formed from the ionization of some particles from the coma.
Last Seen Hashtags on Sotwe
juliaann
Seen from Pakistan
angzzi
Seen from Korea
危険物品
Seen from United States
Maharashtra Ruling Party
Seen from Singapore
brosis
Seen from United Kingdom
Lusamine
Seen from Mexico
anxiouspanda((()))*****+filter:videos
Seen from Germany
METAGORGEOUS
Seen from United States
orianamarzoli
Seen from Italy
StrikesDown
Seen from United States
Most Popular Users
Elon Musk 
@elonmusk
241.5M followers
Barack Obama
@barackobama
118.9M followers
Cristiano Ronaldo
@cristiano
114.6M followers
Donald J. Trump
@realdonaldtrump
111.8M followers
Narendra Modi
@narendramodi
107.1M followers
Rihanna
@rihanna
98.7M followers
NASA
@nasa
92.3M followers
Justin Bieber
@justinbieber
91.8M followers
KATY PERRY
@katyperry
90M followers
Taylor Swift
@taylorswift13
84M followers
Lady Gaga
@ladygaga
75.5M followers
Virat Kohli
@imvkohli
73.5M followers
Kim Kardashian
@kimkardashian
70.9M followers
YouTube
@youtube
68.8M followers
Neymar Jr
@neymarjr
66.5M followers
Bill Gates
@billgates
65.2M followers
Selena Gomez
@selenagomez
63.1M followers
The Ellen Show
@theellenshow
62.2M followers
CNN
@cnn
61.8M followers
X
@x
60.7M followers