Discover what exist in the universe
Neutrinos are tiny, neutral particles that are created in the big bang. They’re so small they can pass through a light-year of lead without interacting with any matter. They come from the Sun and other nuclear reactions and radioactive decay. To study neutrinos, scientists use large particle detectors buried deep […]
What Are Neutrinos? Neutrinos are tiny, almost massless particles. They are reproduced by nuclear reactions in the Sun and other stars, radioactive decay, and high-energy cosmic rays striking the Earth’s atmosphere. Electrically neutral, they can stream through ordinary matter with little or no interaction. Neutrinos are subatomic particles with no […]
The Sun is a giant star. It’s the biggest of all the stars. It has a diameter of 1,392,684 km (865,374 miles). To give you an idea of how big that is: if the Sun was hollow and you could shrink the Earth down to a single grain of sand, […]
The Sun is a ball of hot gasses present in the solar system, and it is also one of the largest celestial bodies. It is a perfect sphere of hot gasses with an internal convective movement that generates a magnetic field through a dynamo method. It is an almost perfect […]
A star’s mass determines its color and lifetime. Blue giants are massive stars, much more massive than the Sun, but they don’t burn as long as red dwarfs. This shade of blue is slightly different from what you see in the sky every night. The celestial kind is produced by […]
Red giants are stars that have exhausted their core hydrogen and helium and expanded to millions of miles wide. They burn heavier elements in their cores, resulting in a giant star with a swollen atmosphere. In the final stage of its stellar evolution, a red giant is a large, glowing […]
The Solar Neutrino Problem, an In-Depth Look The solar neutrino problem, also known as the Daytime Sky Effect or the Disappearing Sun Paradox, was an experimental discovery made in 1987. Physicists monitoring a nuclear reactor at the Institut Laue–Langevin in Grenoble, France, found that fewer solar neutrinos had arrived than […]
Scientists have been trying to figure out the age of the Earth for centuries. The process is not as simple as it might seem, and there is no exact answer. There are a few different methods that scientists use to estimate the age of the Earth. Much history has been […]
Neutrinos are elementary subatomic particles with no charge and little or no mass. They participate in only the weak subatomic force and pass through almost unaffected ordinary matter. Neutrinos have no rest mass and travel at speeds close to the speed of light. Neutrinos oscillate between different flavors (electron, muon, […]
The exoplanet discovery race is on. Since 1995, when the first exoplanets were found orbiting a pulsar (a fast-spinning neutron star), astronomers have discovered more than 2,000 planets around other stars. The most striking thing about this large sample of alien worlds is their diversity: these planets are unlike anything […]
