What is the most distant star from Earth
astronomy : Farthest star discovered in space
With the help of a “natural telescope”, astronomers have observed the most distant star in the sky to date. The blue super giant, called "Icarus", shines nine billion light years away, as the team led by Patrick Kelly from the University of California in Berkeley reports in the journal "Nature Astronomy". "This star is at least 100 times farther away than the closest single star we can study," says Kelly.
A sun as a burning glass
Normally, even with the best telescopes, individual stars can only be seen up to a distance of about 100 million light years. The stars of distant galaxies merge into a milky shimmer. Only supernova explosions, in which a dying star briefly shines brightly, or the gamma ray flashes of merging neutron stars can be seen over even greater distances.
Icarus shines in a galaxy five billion light years away
A cosmic coincidence came to the aid of the researchers: According to Albert Einstein's general theory of relativity, a large mass bends space, so it bundles the rays of a light source behind it like a lens. Such gravitational lenses are "amazing cosmic telescopes," says co-author Alex Filippenko of the University of California. Individual stars can also serve as a lens and achieve a thousandfold gain. For this, the background star, lens star and the observer on earth must be exactly in one row. This was achieved with the “Hubble” space telescope: Icarus lit up when exactly in front of him a star similar to our sun passed by in a galaxy five billion light-years away and amplified the light of the blue giant star 2000 times. (dpa)
- Why do humans adopt instead of procreation
- Are LEGO elements waterproof?
- What are structural defects in buildings
- Run Linux CD-DVD players
- Today's google logo is gmmxie why
- What is an art similar to collage art
- Is it worth it to memorize a textbook
- Can defeat Amit Shah Chandra Babu Naidu
- Who was your most memorable dog
- Why was Michael Jackson a legend
- How is rice made
- What is the healthiest hot grain
- What is semantic segmentation
- How do you define contempt
- Is gasoline an alkali or aromatic
- Why should students prefer Smarto Systems
- Why are humans unable to photosynthesize?
- Has anyone got any awards from Flipkart Gamezone
- What shall we pursue in wisdom?
- Whatever happened to jazz music
- How safe are Cessna jets
- Where are habits stored in the brain
- Has anyone ever decided to become a zoelibataer?
- How can the temperature be measured