Blazars are active galaxies that emit narrow jets of ionized matter from their centers, aimed towards Earth. Depending on ...

Blazars are active galaxies that emit narrow jets of ionised matter from their centres, aimed towards Earth. Depending on properties of the electromagnetic radiation emitted by the jets, astronomers ...

Astronomical telescopes ... A ray (3) striking the mirror at the optical axis is reflected at an angle equal to the angle of incidence. The ray diagram below uses three reflected beams to ...

The Hubble Space Telescope captured an image of a star and a spiral galaxy, both in the constellation Virgo. But the photo is ...

Astronomers have identified a bright hydrogen emission from a galaxy in the very early universe. The surprise finding is ...

Researchers have traced a mysterious radio signal back to an 'unprecedented' region of space for the very first time.

New optical technologies have revolutionized astronomy, from the invention of the telescope 400 years ago to more recent developments of adaptive optics and segmented mirrors. The next disruptive ...

Get closer to our solar companions with the best telescopes for seeing planets, just in time for February's fantastic planetary parade. Want to focus your stargazing on our cosmic neighbors ...

Questions that have long eluded astronomers could finally be answered with the launch of an advanced space telescope NASA has spent years developing. Once in orbit, the instrument known as SPHEREx ...