How can we tell how fast the universe is expanding?
The Hubble Space Telescope has reached a new milestone in its work to find out how quickly the universe is expanding – and it supports the idea that something strange is happening in our universe, Nasa says. In recent years, astronomers have used telescopes like Hubble to understand exactly how quickly our universe is expanding.
nasa something weird independent
Is ‘something weird’ going on in the universe?
NASA, in its recent report, revealed that ‘something weird is going on’ as a team of astronomers, led by Adam Riess of the Space Telescope Science Institute has found a "discrepancy". This discrepancy, NASA says is, between the expansion rate as measured in the local universe compared to independent observations from right after the big bang.
Why is there a discrepancy in the size of the universe?
This discrepancy, NASA says is, between the expansion rate as measured in the local universe compared to independent observations from right after the big bang. So far, scientists have measured the rate of the universe’s expansion using a unit of measurement called the Hubble Constant.
Will the universe double in size in 10 billion years?
The research has found that to a precision rate of just over 1%, the universe will double in size in 10 billion years. Adam Riess of the Space Telescope Science Institute and the John Hopkins University in Baltimore, Maryland, shared that the measurements they are now getting are more accurate than ever before.
nasa something weird going on in the universe
What’s happening to the universe?
NASA says something strange is happening with our Universe and how quickly it’s expanding. Scientists have been studying new data from the Hubble Space Telescope. They say the expansion rate has become much quicker compared to the expectations.
Why are sunspots important to scientists?
Sunspots are often precursors to solar flares – intense outbursts of energy from the surface of the Sun – so monitoring sunspots is important to understanding why and how flares occur. Additionally, understanding the frequency of flares on other stars is one of the keys to understanding their chance of harboring life.
How far away are the sunspots on the Sun?
In a new study, scientists looked at sunspots – darkened patches on the Sun caused by its magnetic field – at low resolution as if they were trillions of miles away. What resulted was a simulated view of distant stars, which can help us understand stellar activity and the conditions for life on planets orbiting other stars.
What happens when a sunspot appears at the center of the Sun?
In visible light, when a singular sunspot appears at the center of the Sun, the Sun is dimmer. However, when the sunspot group is near the edge of the Sun, it’s actually brighter due to faculae – bright magnetic features around sunspots – because, near the edge, the hot walls of their nearly vertical magnetic fields become increasingly visible.
What are sunspots and solar flares?
Sunspots are areas that appear dark on the surface of the Sun. They appear dark because they are cooler than other parts of the Sun’s surface. Solar flares are a sudden explosion of energy caused by tangling, crossing or reorganizing of magnetic field lines near sunspots. The surface of the Sun is a very busy place.
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What does a composite image of the Sun reveal?
This composite image of the Sun reveals the entire solar atmosphere in multiple wavelengths. This composite image of the Sun reveals the entire solar atmosphere in multiple wavelengths. On June 5 2012, SDO collected images of the rarest predictable solar event—the transit of Venus across the face of the sun.