Flu epidemic
Why are the sun's outer rings so much hotter than the inner core?
Surrounding the sun is a layer of gas called the corona in plasma form with temperatures reaching over 3 million degrees.
Solar
Browse ScienceInfo articles and explainers related to Solar.
Topic archive
Articles about Solar
1,751 published items.
Discover science
Which planet is the smallest in the Solar System?
It is the closest planet to the Solar System, with a diameter just over one-third that of Earth.
Space science
NASA releases never-before-seen images of Uranus
New images reveal many mysteries of Uranus, one of the most distant planets in the Solar System.
Space science
Scientists have yet to explain the cigar-shaped object in space.
Scientists say the cigar-shaped object has many complex elements. It could be an alien spacecraft, given its features that do not resemble a comet.
Conquer Mars
UAE spacecraft takes photos of the solar system's largest volcano
The UAE's Hope probe sent back its first image of Mars days after successfully entering orbit around the planet.
Space science
For the past 24 hours, radio waves around the world have been flickering: The culprit is appearing in the sky!
The brightest celestial body in Earth's sky is
Space science
US successfully transmits solar power from space to Earth
A research team at the California Institute of Technology (Caltech) conducted the world's first experiment transmitting wireless power in space.
Space science
How long does it take to reach another star system besides the Solar System?
A group of physicists decided to estimate how long it would take us to reach other star systems in the Milky Way using existing spacecraft.
Space science
Shocking discovery of 'strange object from Oort Cloud' falling in Canada
New analysis of a green fireball from the Oort Cloud that landed in Canada in February 2021 could change a host of understandings about the formation of Earth and the en…
Space science
Scientists say that even if you travel at the speed of light, you still can't reach the edge of the universe?
The universe is vast with mysteries beyond human understanding, from the vast Solar System to distant galaxies billions of light years away.
Space science
'Planet 9' left its mark on Earth before disappearing?
A mysterious planet may have approached the early Sun at a distance slightly farther than Uranus and rearranged everything in the star system.
Space science
Discover the fastest objects in the universe
The Parker Solar Probe, which reaches speeds of 532,000 km/h, is the fastest man-made object, but is still very slow compared to other celestial bodies in the universe.
Space science
Magical 'events' not to be missed in the night sky in 2025
In 2025, stargazers can look forward to a host of exciting celestial wonders.
Space science
A 'dark object' may have brought life to Earth
An elusive class of objects may be much more numerous than previously thought and may be life-bearing spacecraft.
Space science
The Truth About the Solar System's 3rd Habitable Planet
The Solar System actually has three planets in its orbit.