redshift

Palomar Transient Factory, Zwicky Transient Facility, small telescopes, Vera Rubin Observatory, Large Synoptic Survey Telescope, Shrinivas Kulkarni, SpaceX Starlink, astronomical twilight, Tata Institute of Fundamental Research, dark energy, Hubble constant, redshift, Doppler effect, charge-coupled devices, Type Ia supernovae, supernova, neutron stars, pulsars, millisecond pulsars, Alex Filippenko, Ooty radio telescope, Govind Swarup, IIT Delhi, Caltech Optical Observatory, Donald Backer,

Interview: Shrinivas Kulkarni, Finder of a Thousand Exploding Stars

Big Bang, Big Chill, Big Freeze, Big Rip, quantum tunneling, cosmic microwave background radiation, metric expansion of the universe, cosmic inflation, redshift, Doppler effect, metastable valley, Hubble constant, cosmological constant, Quintessence, dark energy, gravity, general theory of relativity,

Why Won’t the Gravity of Galaxies Keep Our Universe From Expanding?

Astronomers using the Hubble Space Telescope have captured the most comprehensive picture ever assembled of the evolving Universe — and one of the most colourful. The study is called the Ultraviolet Coverage of the Hubble Ultra Deep Field. Caption and credit: hubble_esa/Flickr, CC BY 2.0

A Universe Out of Sight