Предмет: Биология, автор: sasha020203

мне нужна информация о галактиках, есть ли они вообще, как называются и т. д.

Ответы

Автор ответа: dilnazochka99
0
Галактика это система из звезд, пыли и газа удерживаемых вместе при помощи гравитации. Наша солнечная система находится в галактике Млечный Путь. Ученые подсчитали, что существуют более 100 миллиардов галактик которые разбросаны по всей видимой Вселенной. При помощи телескопов удалось сфотографировать миллионы галактик.Галактики имеют размер от нескольких тысяч до полумиллиона световых лет. Маленькие галактики состоят из менее чем миллиарда звёзд, большие галактики имеют более триллиона звёзд.  
Автор ответа: sasha020203
0
если не трудно, напиши конкретно об одной из звёздных систем. Какие там планеты?
Похожие вопросы
Предмет: Английский язык, автор: VOTAVU
Помогите , пожалуйста
Вариант 3

1. Choose the right article.
1) ... flight from Minsk is on time.
A an B a C the D -
2) I was born in ... Brazil.
Aan B a C the D -
3) Sherlock Holmes lived in ... Baker street.
A an B a C - D the
4) He wants to be ... flight manager.
A an B a C the D -
5) Mark is ... most unreliable person in this office.
A an B a C the D-
6) It's ... very difficult question.
Aa B an C the D -

2. Choose the right modal verb.
1) My grandfather ... give up smoking after a heart attack.
A must B should C can D may
2) ... you swim? Yes, but not very well.
A must B should C can D may
3) You ... not touch anything in the museum.
A must B should C can D may
4) ... I go out? It's too hot inside.
A must B should C can D may
5) You ... take my umbrella, if you forgot yours.
A must B should C can D may
6) He feels bad. He ... visit a doctor.
A must B should C can D may

3. Put the correct form of the noun.
1) Why do people become (flight attendant)?
2) There are several (bus) next to the railway station.
3) The map has hundreds of ( country) on it.
4) My luggage weighs 10 (kilo).
5) There were three (fireman) near the station.
6) I took several (book) in my hand luggage.


4. Choose the correct job.
1) They work with aircraft navigation technologies, aerodrome planning, airspace development.
A flight attendants B pilots C aviation engineers D check-in officers
2) A person who operates the motor vehicle.
A a driver B a doctor C a courier D a waiter
3) A person who writes novels, stories ...
A a teacher B a writer C an engineer D a manager
4) A person who gives care to people who are sick or injured.
A a teacher B a driver C a nurse D an architect
5) A person who studies or has a special knowledge of economics.
A a builder B an economist C an engineer D a driver
6) A person who represents an insurance firm and sells insurance polices.
A an insurance agent B teacher C an architect D an artist


5. Choose the correct item.
1) The Olympic games ... a very long history.
A has B have C will have D had
2) ... you continue playing tennis after the injury?
A Did B Do C Does D Will
3) She has got a new coach! … she like him ?
A do B did C does D will
4) Football ... in Britain in 19th century.
A originate B will originate C originates D originated
5) ... your parents buy you a new ball next Saturday?
A Do B Does C Did D Will
6) She ... to the swimming pool every day.
A go B goes C will go D went