Tech & Science : NASA films Mercury as it passes between Earth and the sun - - PressFrom - Australia
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Tech & Science NASA films Mercury as it passes between Earth and the sun

17:51  12 november  2019
17:51  12 november  2019 Source:   news.sky.com

Mercury is about to travel across the sun for the last time until 2032. Here's how to watch the rare transit.

  Mercury is about to travel across the sun for the last time until 2032. Here's how to watch the rare transit. Mercury will glide across our view of the sun on November 11. The transit won't happen again until 2032. To watch, you'll need a telescope or binoculars equipped with a certified solar filter to protect your eyes from damage. Don't ever look directly at the sun. Here's everything you need to know about the upcoming Mercury transit. Visit Business Insider's homepage for more stories.On Monday, November 11, Mercury will glide across our view of the sun in a rare celestial treat.This event is called a "transit," and it happens when a planet passes between Earth and its star.

Stargazers across the world are watching as Mercury moves across the face of the sun - a rare event that happens just 13 or 14 times every 100 years. NASA | Fiery Looping Rain on the Sun - Продолжительность: 4:17 NASA Goddard Recommended for you.

Around 13 times per century, Mercury passes between Earth and the sun in a rare astronomical event known as a planetary transit. The 2016 Mercury transit

a star filled sky: Mercury transitted between the Earth and the sun © Press Release Mercury transitted between the Earth and the sun

NASA has published a film showing Mercury transiting the sun - passing between it and the Earth.

The video shows the silhouetted planet - which is the smallest in the solar system, and the closest to the sun - passing across the face of it.

The last time Mercury passed between the Earth and the sun was on 9 May 2016, and the next won't be until 13 November 2032.

The first time a transit was ever observed was on 7 November 1631, although one of the fathers of modern astronomy Johannes Kepler predicted the existence of these transits before.

Astronomers consider the transits to be important for two special developments in astronomy.

Kepler had predicted that planets orbited the sun in elliptical shapes, rather than perfect circles, running contrary to the previous theories of the solar system - believed to revolve around the Earth.

An image of Mercury captured by NASA's Messenger spacecraft © Press Release An image of Mercury captured by NASA's Messenger spacecraft

"Transits of Mercury and Venus can happen because they are the only planets that orbit between the Earth and the sun," NASA said.

"By using ellipses to describe the orbits of the planets Kepler was able to predict when transits would occur.

"The Ptolemaic theory that used circular orbits did not have the accuracy needed to predict these events, even after epicycles and equants were introduced.

Small Yet Mighty Mercury Still Holds Many Mysteries

  Small Yet Mighty Mercury Still Holds Many Mysteries Two different spacecraft have visited the planet, but there’s still so much we don’t know about it. Rockets roared to life on August 3, 2004, as an intrepid spacecraft launched from Cape Canaveral and set out to uncover mysteries about the Solar System’s smallest planet: Mercury. The Messenger craft—short for Mercury Surface, Space Environment, Geo-chemistry and Ranging—rocketed toward the dense, little planet with big plans. Mariner 10—the first spacecraft to visit multiple planets and use gravity assist to fling itself from one to another—swept past Mercury three times in the 1970s.

This image provided by NASA shows the planet Mercury in silhouette, low center, as it transits across the face of the sun on Monday, Nov. 11, 2019. The solar system's smallest, innermost planet will resemble a tiny black dot Monday as it passes directly between Earth and the sun .

Mercury is putting on a rare celestial show, parading across the sun in view of most of the world. Asia and Australia will miss out. In this composite image provided by NASA , the planet Mercury passes directly between the sun and Earth on May 9, 2016 in a transit which lasted

"In 1627, Kepler predicted that a transit of Mercury would occur on November 7 1631. Pierre Gassendi watched from his Paris observatory and saw a small black dot move across the face of the sun on that day."

Related Slideshow: Famous milestones in space (Provided by Photo Services)

From the surface of Mercury, the sun would appear three times larger than it does in the Earth's sky, and the sunlight would be seven times brighter.

However because it has no atmosphere, Mercury does not retain the sun's heat on its dark side - this means that Venus, which has a dense atmosphere, is the hottest planet in our solar system.

Two spacecraft have visited Mercury, the Mariner 10 in 1974 and Messenger, which was launched in 2004

The most colourful images of Mercury were produced by using images from the Messenger spacecraft.

NASA: Yeah, there's totally water vapor on Jupiter's moon Europa .
We suspected it was there. Now we know for sure.NASA confirmed the presence of water vapor on Europa in an announcement on Monday. It's one more reason why we should be looking to this moon for potential signs of life beyond Earth.

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