Sentences with phrase «known as supernovae»

' The Kepler space telescope, famous for finding exoplanets, has also been valuable in tracking exploding stars known as supernovae

Some of these early stars were huge, a hundred times as massive as the sun, and lived short, spectacular lives, dying in gigantic explosions known as supernovae.

But in February, scientists discovered that stellar explosions known as supernovae act like particle accelerators, boosting protons» speeds enough to turn them into cosmic rays.

Penn State University astronomers have discovered that the mysterious «cosmic whistles» known as fast radio bursts can pack a serious punch, in some cases releasing a billion times more energy in gamma - rays than they do in radio waves and rivaling the stellar cataclysms known as supernovae in their explosive power.

The latest pop at an answer weaves astrophysics, particle physics and biochemistry into a startling proposal: that the stellar explosions known as supernovae are to blame.

Nova has Latin origins and is originally spelled Novae and is also known as Supernovae.

When a massive star runs out of fuel at the end of its life, it collapses and triggers a violent explosion known as a supernova.

A shock wave from that collapse will speed outward, violently expelling the star's outer layers in a massive explosion known as a supernova.

The hot gas the star leaves behind is known as a supernova remnant; this one is called Vela.

Besides black hole mergers and neutron star smashups, in the future, scientists might also spot waves from an exploding star, known as a supernova.

When massive stars die, they create explosions known as supernovas.

Not exact matches

The supernova, known as SN1987A, was first seen by observers in the Southern Hemisphere in 1987 when a giant star suddenly exploded at the edge of a nearby dwarf galaxy called the Large Magellanic Cloud.

Before 1987A, astronomers thought that only puffy red stars known as red supergiants could end their lives in a supernova.

At first, astronomers suspected that 1987A was a class of supernova known as type 1a — the detonation of a stellar core left behind after a star like the sun quietly sheds gas at the end of its life.

[2] The supernova remnant is SNR G332.4 - 00.4, also known as RCW 103.

A particular class of supernovae known as type Ia are well suited to the task.

• What do we know about the nature of the death of massive stars — signaled by Type II supernovae — that fashion crucial elements such as calcium and oxygen?

Gas and dust in space can have an impact on the brightness of standard candles — objects with known brightness such as type 1a supernovas and some variable stars

For example the filaments to the right of the image are the remnants of an ancient supernova (SNR G332.4 - 00.4, also known as RCW 103), and the glowing red filaments at the lower left surround an unusual and very hot star (RCW 104, surrounding the Wolf - Rayet star WR 75).

Because this class of explosion was distinct from the far more frequent and far less bright stellar outburst known as a nova, they said, it deserved a classification all its own: supernova.

Observations of type 1a supernovas imply a faster expansion rate (known as the Hubble constant) than studies of the cosmic microwave background — light that originated early in cosmic history (SN: 8/6/2016, p. 10).

The other method, practised by Riess and his colleagues, measures how distant galaxies appear to recede from us as the universe expands, using stars and supernovae of known brightness to gauge the distance to those galaxies.

These outflows are driven by the life and death of stars, specifically stellar winds and supernova explosions, which collectively give rise to a phenomenon known as «galactic wind.»

Known as 2014J, this was a Type la supernova caused by the explosion of a white dwarf star, the inner core of star once it has run out of nuclear fuel and ejected its outer layers.

The spectacle, 169,000 light - years away in a galaxy called the Large Magellanic Cloud, may shed light on the nature of the original explosion, a supernova known as 1987A, as well as on its surroundings.

Astronomers know that while large stars can end their lives as violently cataclysmic supernovae, smaller stars end up as planetary nebulae — colourful, glowing clouds of dust and gas.

To ascertain the age of the boulders strewn by the glaciers and thus come up with a date when glaciers were at their greatest extent, Willenbring and colleagues used a technique known as cosmogenic nuclide exposure dating, which measures the chemical residue of supernova explosions.

The evidence for dark energy came from studies of a kind of exploding star known as a Type 1a supernova.

The explosion was a Type Ia supernova, the most luminous variety, which occurred when a small, dense star known as a white dwarf blew up about 7000 light - years from Earth.

Astrophysicists think that this process is what powers a common type of supernova explosion, known as Type II.

No further bursts were seen in 90 hours of additional observations, which implies that it was a singular event such as a supernova or coalescence of relativistic objects.

Hollingshead mentions the supernova and says what a spectacular sight it was, so even if the memory — the actual memory of seeing it when he was eight years old in 1572 was fading, but, you know, as an adult he has a chance to be reminded of just how incredible that thing was.

This would trigger gigantically powerful supernovas, known to astronomers as «pair - instability» supernovas, which would have added their own, slightly different mix of elements to interstellar gas clouds, and to stars that formed from them.

We know from very precise supernova observations that the universe is accelerating, but at the same time we rely on coarse approximations to Einstein's equations which may introduce serious side - effects, such as the need for dark energy, in the models designed to fit the observational data.»

Astronomers don't yet know which particular conditions could have triggered such «extraordinary luminosity,» as the team that discovered the supernova writes in the 20 October issue of The Astrophysical Journal Letters.

Soderberg notes that future experiments may provide clues by monitoring supernovae for neutrinos as well as ripples in spacetime known as gravitational waves.

Earlier this year, astronomers in London detected a spectacular, once - in - a-century supernova (dubbed SN2014J) in a relatively nearby galaxy known as Messier 82 (M82), or the Cigar Galaxy, 12 million light - years away.

It became known as Sagittarius A (abbreviated Sgr A) because it comes from the direction of the eponymous constellation, and astronomers speculated that it was the remains of a massive supernova — an exploded star.

Refsdal's story began in November 2014 when scientists spotted four separate images of the supernova in a rare arrangement known as an Einstein Cross around a galaxy within MACS J1149.5 +2223 (heic1505 — http://www.spacetelescope.org/news/heic1505/)[3].

Some cosmic rays detected on Earth are produced in violent events such as supernovae, but we still don't know the origins of the highest - energy particles, which are the most energetic particles ever seen in nature.

This image, taken with the NASA / ESA Hubble Space Telescope, shows the supernova remnant SNR 0509 - 68.7, also known as N103B (top of the image).

A type Ia supernova arises from the explosion of an ultradense stellar remnant known as a white dwarf, but it is less than clear how the white dwarf comes to ignite in a thermonuclear blast.

A group of astronomers used Hubble to study the remnant of the Type Ia supernova explosion SNR 0509 - 68.7 — also known as N103B (seen at the top).

When stellar cataclysms known as type Ia supernovae flare up far across the universe, their brightness and consistency allow astronomers to use them as so - called standard candles to measure cosmological distances.

When a supernova involves a lone star, it's known as a Type 2 supernova.

Type Ia supernovas are known to form when a white dwarf merges with another star, like a puffed - up red giant (as opposed to Type II supernovas, which form when a single star dies and collapses on itself).

When a supernova involves a binary, or two - star system, it's known as a Type 1 supernova.

Supergiant luminosities are not as well known or uniform as the Type Ia supernovae, so astronomers prefer to use the Type Ia supernovae to derive the distances to the very distant galaxies.

In any case, LP40 - 365 is the first known white dwarf to have survived a (failed) Type Ia supernova, and as such it opens up some exciting prospects for future science.

The scientists trained the mighty Keck telescopes at known supernovae and used their findings to determine that the expansion of the Universe was not slowing down, as was expected, but in fact was speeding up — driven by a mysterious repelling force now called Dark Energy.