Private Space Reading Answers

⚡ TL;DR

Essential strategies and practice techniques for this IELTS Reading question type. Learn how to manage time and improve accuracy.

Originally published April 2023. Last reviewed 3 July 2026.

Private Space 

A It’s a remarkable achievement: the question is no longer ‘How can we send humans into space?’ but ‘How can we keep them there?’. Spaceflight is reaching a turning point where new technologies in engine development, better understanding of aerodynamics and materials for body construction are making spaceflight possible for private industry.

B The history of space exploration, until relatively recently, has been one of big government-backed projects like the Space Shuttle, Mars Landers and Long March rockets. But the most recent launches to the International Space Station (ISS) have been very special for at least three reasons. Firstly, along with 450 kg of scientific equipment, food and clothes, the rocket was carrying ice cream for the three space station astronauts. Secondly, the rocket was unmanned, being guided into docking position and back to earth again by remote control and automated systems. Finally, the rocket was commissioned from a private company by NASA.

C When the privately owned rocket delivered its goods to the ISS, it marked a milestone in the evolution of space flight and vindicated NASA’s decision to delegate routine supply flights to the space station. The flight has been a long time in development. It started with President George W Bush announcing his Vision for Space Exploration, calling for the ISS to be completed. Under the next President, America’s Space Shuttles were retired, leaving NASA with no other choice but to look for alternative methods of supplying the ISS. The initiative was part of an effort to commercialise the space industry in order to decrease costs and spread the investment in the industry across a wider group than governments.

D The initiative had many attractions for NASA. By outsourcing to the private sector the routine business of taking food and equipment to and from low-earth orbit, NASA can theoretically free up money to do things that it really wants to prioritise: missions such as sending astronauts to Mars and landing on asteroids by the 2030s. Now that the Space Exploration Technologies Corporation (spaceX) has proved that private enterprise can be players in space exploration, firms are pouring money into developing new spacecraft built to transport cargo, to mine asteroids and to carry passengers into space.

E In the last half of the twentieth century only government-backed agencies like NASA and Russia’s ROSCOSMOS were capable of running space programmes due to the gigantic investment costs and uncertain payoffs. However, SpaceX and similar companies are proving that the former conditions are no longer relevant as new solutions are coming to light. Commercial companies like Boeing are able to raise large sums of money to run these projects.

Furthermore, as the firms are running cargo and taxi services to lower orbits, the break-even point is lower, the technology is cheaper and they have the benefit of years of experience in commercial aviation and space flight. Opening space programmes to the commercial sector has the additional advantage of generating more solutions to old problems. An analogy is the invention of the Internet. When the technology went into the commercial sector, no one could have envisioned the development of social network sites. Likewise, no one can predict where commercial enterprise will take the space industry.

F The uncertainty surrounding where the space industry will end up is a problem as well as an asset and it is unsettling private investors who like to invest in relatively certain prospects. At the moment the industry is dominated by big-spending billionaires like the owner of SpaceX. In addition, the relatively small number of companies in the area could pose a problem in the future. The commercial space industry is still very new and there is no guarantee that progress will be smoother. For one thing, no one is sure that the business model is sound: government is still the major, if not only, customer available to the private space companies.

The other problem is that space travel is high risk: the loss of space shuttles Challenger in 1986 and Columbia in 2003 illustrates that even the most carefully planned launches have unavoidable risks associated with them. The question is what would happen to the industry if another accident occurred. Finally, many space experts are doubtful that, even if private industry takes over the ‘taxi’ role for low-orbit missions, NASA will be able to achieve its ambitions, given its squeezed budgets and history of being used for political purposes. Furthermore, NASA may have created another space race, this time between government and private industry. If NASA doesn’t go to Mars or the asteroid belt, its private competitors certainly have plans to do so.

G In spite of all of these risks, many argue that it is critical for the private sector and federal government to work together to push further into space.

Questions 1-6

The passage has six paragraphs labelled A-F.

Which paragraph contains the following information?

Write the correct letter A-F in boxes 1-6 on your answer sheet.

1 NASA being able to spend money on important projects ……….

2 events leading to the commercialisation of spaceflight ……….

3 new developments that have made spaceflight more accessible ……….

4 an automated rocket that successfully completed a mission ……….

5 the great dangers of space travel ……….

6 new answers being found to previous questions ……….

Questions 7-11

Choose the correct letter, A, B, C or D.

7 Which is NOT mentioned as making private space flight possible?

new methods of constructing the rockets

modern substances from which to build the rockets

understanding better how air moves round objects

new methods of making space suits

8 Why are the recent launches special?

Their destination was the International Space Station.

They carried clothes.

They were not managed by a private company.

The rocket is not owned by a government.

9 In order to make NASA look for other spaceflight providers, the US government

invested in private space companies.

started to build the international space station.

stopped using the Space Shuttle.

allowed private companies to fly into space.

10 Private companies

need to reduce the cost of space projects.

have social network sites.

are able to fly rockets at high orbits.

act as ferries to and from the space station.

11 At present, the private space industry is characterised by

uncertainty about how to make profits.

companies controlled by individuals.

companies too small to raise the amount of money needed.

government interference.

Questions 12-17

Complete the summary below.

Choose NO MORE THAN TWO WORDS from the passage for each answer.

Write your answers in boxes 12-17 on your answer sheet.

There are a number of problems with commercial space projects. To start with, the 12……… might not be sound. There is also great 13……….. attached to space flight – what would happen if there was another 14……..? Experts doubt whether NASA can fulfil its 15……….. as it has often been under 16…………. pressure. Moreover, the development may lead to a 17………… between NASA and the private space industry.

Answer Key

Question No.AnswerQuestion No.Answer
1.D9.C
2.C10.D
3.A11.B
4.B12.business model
5.F13.risk
6.E14.accident
7.D15.ambitions
8. D16.political
17.space race / race

Radiation And Human Health IELTS Reading with Answers

⚡ TL;DR

Essential strategies and practice techniques for this IELTS Reading question type. Learn how to manage time and improve accuracy.

Originally published April 2023. Last reviewed 3 July 2026.

A Radioactivity occurs naturally. The main source comes from natural sources in space, rocks, soil, water and even the human body itself. This is called background radiation and levels vary from place to place, though the average dose is fairly constant. The radiation which is of most concern is artificial radiation which results from human activities. Sources of this include the medical use of radioactive materials, fallout, and contamination from nuclear bomb tests. discharges from the nuclear industry, and the storage and dumping of radioactive waste.

B While artificial radiation accounts for a small proportion of the total, its effects can be disproportionate. Some of the radioactive materials discharged by human activity are not found in nature, such as plutonium, while others which are found naturally may be discharged in different physical and chemical forms, allowing them to spread more readily into the environment, or perhaps accumulate in the food-chain.

For all these reasons simple comparisons of background and artificial radioactivity may not reflect the relative hazards. Equally important, it has never been shown that there is such a thing as a safe dose of radiation and so the fact that we are progressively raising global levels should be of as much concern to us as the possibility of another major nuclear disaster like Chernobyl. Every nuclear test, nuclear reactor or shipment of plutonium means an additional and unnecessary health risk.

C In general, the effects of radiation can be divided into those which affect the individuals exposed and those which affect their descendants. Somatic effects are those which appear in the irradiated or exposed individual. These include cancer and leukemia. Hereditary or genetic effects are those which arise in subsequent generations.

Many of the elements which our bodies need are produced by the nuclear industry as radioactive isotopes or variants. Some of these are released into the environment, for example, iodine and carbon, two common elements used by our bodies. Our bodies do not know the difference between an element that is radioactive and one which is not. So, radioactive elements can be absorbed into living tissues, bones or the blood, where they continue to give off radiation. Radioactive strontium behaves like the calcium-an essential ingredient in our bones — in our bodies. Strontium deposits in the bones send radioactivity into the bone marrow, where the blood cells are formed, causing leukemia.

D There are three principal effects which radiation can have on cells: firstly the cell may be killed; secondly the way the cell multiply may be affected, resulting in cancer; and thirdly damage may occur in the cells of the ovaries or testes, leading to the development of a child with an inherited abnormality.

In most cases, cell death only becomes significant when large numbers of cells are killed, and the effects of cell death therefore only become apparent at comparatively high dose levels. If a damaged cell is able to survive a radiation dose, the situation is different. In many cases, the effect of cell damage may never become apparent. A few malfunctioning cells will not significantly affect an organ where the large majority are still behaving normally.

However, if the affected cell is a germ cell within the ovaries or testes, the situation is different. Ionizing radiation can damage DNA, the molecule which acts as the cell’s ‘instruction book’. If that germ cell later forms a child, all of the child’s cells will carry the same defect. The localized chemical alteration of DNA in a single cell may be expressed as an inherited abnormality in one or many future generations.

In the same way that a somatic cell in body tissue is changed in such a way that it or its descendants escape the control processes which normally control cell replication, the group of cells formed may continue to have a selective advantage in growth over surrounding tissue. It may ultimately increase sufficiently in size to form detectable cancer and in some cases cause death by spreading locally or to other parts of the body.

E While there is now broad agreement about the effects of high-level radiation, there is controversy over the long-term effect of low-level doses. This is complicated by the length of time it takes for effects to show up, the fact that the populations being studied (bomb survivors, people exposed to nuclear tests or workers in the nuclear industry ) are small and exact doses are hard to calculate.

All that can be said is that predictions made about the effects of a given dose vary. A growing number of scientists point to evidence that there is a disproportionately high risk from low doses of radiation. Others assume a directly proportionate link between the received dose and the risk of cancer for all levels of dose, while there are some who claim that at low doses there is a disproportionately low level of risk.

Questions 1-4

Reading Passage has 5 sections A-E.

From the list of headings below choose the most suitable heading for sections B to E.

Write the appropriate numbers (i-viii) in boxes 1-4 on your answer sheet.

Note: There are more headings than sections, so you will not use all of them. You may use any of the headings more than once.

HEADINGS

i. Cells affected by radiation

ii. Effects of low-dose radiation

iii. Effects on cell multiplication

iv. Effects of radiation on cells

v. Sources of radiation

vi. Radiation in the food chain

vii. Dissemination of radiation

viii. Health effects of radiation

Example             Section A                           Answer           v

1 Section B

2 Section C

3 Section D

4 Section E

Questions 5-10

Classify the following as linked in the passage to:

BR              Background Radiation

AR             Artificial Radiation

N                Neither

B                Both

Write the appropriate letters in boxes 5-10 on your answer sheet.

produced by the human body

6 involves only safe amounts of radiation

7 is used for medical purposes

8 includes plutonium

9 produces a constant level of radiation

10 can enter the food chain

Questions 11-16

Complete the summary of Section D of Reading Passage below.

Choose your answers from the box below the summary and write them in boxes 11—16 on your answer sheet.

Note: There are more words/phrases that you will need to fill the gaps. You may use a word or phrase more than once if you wish.

SUMMARY

Radiation can affect an organism by damaging 11……… which may then die or malfunction. If the 12……. affected in this way is small, the effect will not be too drastic and may not be noticeable. Alternatively, the 13……. may grow uncontrollably and form cancers, in which case the organism is likely to die.

If the DNA in a germ cell in the ovaries or testes is affected, and 14…….. originating from that 15….. may display 16…., which can, in turn, be passed on to further offspring.

offspringdamaged cellsfurther offspring
individual cellsorganisms number of cellscancers
germ cellabnormalitiesDNA

Answer Key

Question No.AnswerQuestion No.Answer
1.vii9.N
2.viii10.B
3.iv11.individual cells
4.ii12.number of cells
5.BR13.damaged cells
6.N14.offspring
7.AR15.germ cell
8.AR16.abnormalities