Question

Theme: Discovery and Invention CLASS IX DEC 2ND WEEK

TEST ITEM 1

Will Bright Star Betelgeuse Finally Explode? ALook at the Dimming Red Giant in Orion's

Shoulder By Chelsea Gohd.

It can't hurt to look up at the night sky just in case.

A direct-sky image of Betelgeuse, a star that is shedding its mass as it nears the end of its life.

(Image credit: ESO/Digitized Sky Survey 2. Acknowledgment: Davide De Martin.)

One of the brightest stars in the sky has been dimming. But, while it might be signalling that

it's ready to explode, it's probably just fading because of strange, stellar physics.

Betelgeuse, a reddish star that's one of the brightest in the night sky, has been noticeably

"fainting," or getting dimmer. The approximately 8.5 million-year-old star, which is part of the

Orion constellation, has been one of the most recognizable stars in the sky because of its

brightness and coloration. But this recent, dramatic fading has prompted scientists to suggest

that the star might be entering a pre-supernova phase, dimming before it collapses and "dies"

in a fiery supernova explosion.

If the star does become a supernova, Betelgeuse would likely be as bright as or even brighter

than the moon for weeks or even more.

At 642.5 light-years from Earth, it would be the closest supernova observed and recorded by

humans (closer than the Crab Nebula, which is 6,523 light-years from Earth and is the result

of a supernova reported to have taken place in A.D.1054). This also means that, if we see

Betelgeuse explode tonight, the supernova really took place over 600 years ago, we're only

seeing it now.

"It'd be brilliant," the star would be so bright that it would make it difficult to see other stars

near it," Edward Guinan, a professor of astronomy and astrophysics at Villanova University

who reported the dimming in an Astronomer's Telegram, told Space.com. "It would be the

brightest supernova ever observed in our galaxy."
Q1.1 What is the brightest natural object in the night sky?

A.

Sun

B.

Moon. C.

Venus

D.

Betelgeuse

Q1.2If the Betelgeuse explodes today, who will be able to observe it? People living in the year:

A.

2020

B.

2100

C.

2662

D.

6523

Q1.3 Image credit means:

A.

Acknowledging the source of the image

B.

Declaring the image was purchased with a credit card

C.

Applauding the credit of the photographer for taking a nice image

D.

Using the image on loan

Q1.4 If ESO stands for European Southern Observatory (an organization of European countries

with telescopes in South America), in which country in the list can you expect the telescopes

to be?

A.

India

B.

Nepal

C.

North Korea

D.

Chile

Q1.5 What is space.com?

A.

A space magazine

B.

A website

C.

An online astronomy university

D.

A telescope

Q1.6 Find the word in the text that means the branch of astrophysics that specially studies

stars.

Ans_____________________________________________________________________

Q1.7- AD 1054 means

A.

1054 years ago from now

B.

1054 years after the birth of Christ

C.

1054 years before the birth of Christ

D.

1054 years after Crab Nebula was formed

Q1.8. Why is Betelgeuse expected to be the brightest object in the sky, when it is actually

becoming fainter now?

Ans:___________________________________________________________________

________________________________________________________________________ answers of it ​

Answer 1

The answer to the following questions will be as such.

• The brightest natural object in the night sky is the Moon.
• The moon is the Earth's only natural satellite. Thus, the answer to the first question will be the Moon.
• If the Betelgeuse explodes today, People living in 2662 will be able to see it.
• Since it will take light approximately 600 years to travel from the Betelguese to earth, people 600 years in the future will be able to observe its explosion.
• Image credit means acknowledging the source of the image.
• This is done to provide necessary recognition to the original owner of the image.
• The ESO telescopes can be expected to be found in Chile.
• Since Chile is located in South America the ESO will build its telescopes there.
• Space.com is a website. It was founded in 1999 in England.
• Astronomy means the branch of astrophysics that especially studies stars.
• 1054 A.D means 1054 years after the birth of Christ.
• The Betelgeuse is expected to become the brightest object in the night sky since it is turning into a supernova.

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