Tech & Science Nobody really knows if there are other ‘Earths’ out there

07:15  21 october  2019
07:15  21 october  2019 Source:   bgr.com

'Miracle' nobody was injured in multi-storey car park blaze, Cork fire crews share photos of aftermath

'Miracle' nobody was injured in multi-storey car park blaze, Cork fire crews share photos of aftermath EMERGENCY services admitted it was a miracle no-one was injured after a major blaze in a multi-storey car park which left 60 cars gutted or damaged and forced the evacuation and closure of a Cork shopping centre. (Photo: Cork City Fire Brigade) Douglas Village Shopping Centre remained closed as Cork Fire Brigade and Gardaí assessed the scale of the damage from the fire at 7pm on Saturday which required 12 brigade units to bring under control.

a star filled sky: space © Provided by Penske Media Corporation space Are there other Earth-like planets out there in the cosmos? We simply don’t know. Scientists have been peering into space for centuries and, thanks to advancing technology, we have spotted other worlds that might be capable of supporting life, but the evidence is sorely lacking.

To help answer the question, researchers from UCLA came up with a new framework for analyzing the makeup of exoplanets using data from the W. M. Keck Observatory and other high-powered telescopes. Based on their observations, the researchers are making a rather bold declaration: Earth isn’t terribly unique.

Hurricane Dorian: Nobody knows how many lived - and died - at Ground Zero

Hurricane Dorian: Nobody knows how many lived - and died - at Ground Zero Our helicopter pilot banked sharply to the right so that I could see the ground beneath us, but I couldn't see any ground - just a mass of splintered wood and rubble, huge piles of it. That was our first glimpse of the shanty town on Abaco Island known as Mudd and Pigeon Peas. Home to thousands of unofficial residents mainly from Haiti, the community has been utterly and completely destroyed. There is nothing left. It is impossible to identify what were houses, what were roads. It has all been smashed to pieces by the thunderous power of Hurricane Dorian.

The researchers focused on nearby white dwarf stars and the rocky material that orbits them. By studying the light coming from these systems, scientists can determine what elements are abundant. This reveals the composition of the rocky bodies that orbited the star, offering a clue as to what kinds of planets or objects orbited it.

“By observing these white dwarfs and the elements present in their atmosphere, we are observing the elements that are in the body that orbited the white dwarf,” Alexandra Doyle, a UCLA graduate student that led the study, explained. “Observing a white dwarf is like doing an autopsy on the contents of what it has gobbled in its solar system.”

The researchers found that elements like silicon, carbon, and oxygen were present, along with hydrogen and helium. This list of “ingredients,” so to speak, matches up well with our own planet, and suggests that worlds with a similar makeup aren’t terribly rare.

That being said, Earth is the only planet that we know of that hosts life in any form. Astronomers have observed planets both in our own system and elsewhere and, as far as we know, we really struck the jackpot with this blue marble we call home. Rocky worlds with a similar composition to Earth aren’t a guarantee when it comes to finding life, and countless other factors — distance from a star, type of star, an abundance of water, etc. — are believed to play major roles as well.

Rocky worlds like our own being common doesn’t necessarily mean we’ll find life on any of them, but it’s still an interesting data point as we continue our search for life beyond Earth.

This fluffy ball contains the story of the universe .
The ghost of a supernova looks like a ball of cotton candy.Last week, NASA released the latest image of Tycho's supernova remnant (also called "Tycho"). The photo, taken by the Chandra X-Ray Observatory, looks a bit like an opalescent dandelion.

Topical videos:

usr: 0
This is interesting!