My rating: 4 of 5 stars
I read this a long time ago. It was in my school's library and the front cover caught my attention. There were a few human visitors on board a boat. A rowing boat if my memory serves me correctly. In the background was a floating round spaceship. A sort of lifeboat from which the boatmen had left. There were tentacles thrusting up out of the water and they were about to attack the boatmen. I was captivated by space travel and dreamed of adventure on other worlds. The cover flicked the switches so I borrowed it from the library. I remember the book focused on twin boys. They had telepathic connections. One could go on the adventure to distant stars while one stayed home. The travellers could communicate by telepathy. As the ship got further away from Earth travelling in excess of light speed etc. The time lapse increases as the twins communicate. What seems like a day or two on board ship becomes months back on Earth. Lots of other concepts too. I remember I enjoyed the adventure when the travellers explored the new world they come across. Also coming to the part that the front cover depicted.