NASA news: Hubble telescope embarks on biggest survey of the stars yet – ‘Lasting impact’

NASA’S Hubble Space Telescope will unravel the secrets of the Universe on what has been branded its largest observing programme ever.

However, unlike many of Hubble’s iconic images, the dataset contains star spectra – rainbow-like wavelengths of coloured light – and not images.

Spectra can reveal details about a star’s size, temperature, speed and chemistry.

Some of the release data includes massive blue stars in nearby dwarf galaxies.

In astronomy, the colour of a star is closely linked to its surface temperatures.

And the hotter a star is, the shorter the wavelength of light it emits.