Type 1a supernovae – Astronomy Now

A 150-million-year-old look at a spectacular spiral

17 January 2022 Astronomy Now

The Hubble Space Telescope is adept at spotting supernova blasts in remote galaxies, helping astronomers pin down the cosmic distance scale. Galaxy NGC 976 it a typically spectacular example of a Hubble target.

Astronomers spot two stars locked in supernova death spiral

13 July 2021 Astronomy Now

Astronomers spot a teardrop-shaped star indicating the distorting presence of a white dwarf as the two spiral toward a supernova blast.

Debris in Kepler supernova remnant clocked at 23 million mph

19 August 2020 Astronomy Now

Debris in supernova remnant still moving at more than 20 million mph 400 years after Type 1a explosion.

X-ray observations suggest dark energy may be growing stronger

30 January 2019 Astronomy Now

Using quasars as “standard candles,” astronomers say they’ve been able to measure the effects of dark energy back to within a billion years of the Big Bang.

Type 1a supernova, caught in the act of exploding, raises new questions

30 November 2018 Astronomy Now

Astronomers have captured the light from a white dwarf exploding in a Type 1a supernova, shedding light on the mechanism powering the blasts while raising fresh questions.

A tangled web this supernova weaves

30 November 2018 Astronomy Now

Tangled clouds of gas from a destroyed star can be seen weaving their way through space in the Large Magellanic Cloud, the remnants of a Type 1a supernova that consumed a white dwarf in a once glorious blaze of light. Such supernovae are critical to measuring cosmic distances.

Hubble data indicate universe growing faster than expected

23 February 2018 William Harwood

Time-consuming observations by the Hubble Space Telescope indicate the universe is expanding faster today than predicted by standard models of the big bang that incorporate dark energy.

Is the universe ringing like a crystal glass?

1 July 2015 Astronomy Now

Two physicists at the University of Southern Mississippi have discovered that the universe might not only be expanding, but also oscillating or “ringing” at the same time, something that has occurred seven times since its creation.