. The 16-year-old Beijinger will tell you: thezero-gravity(零重力) trip.In September, theWorld Space Week... to go to the US to make a zero-gravity flight. Li was one of the winners. He went to the US ……

Humans get a little taller in space because there is no gravity pulling down on them. ……

floating through space in zero gravity, to using the gravity of nearby planets to set up spectacular..., the physics that controls the birds’ movements through zero-gravity is based on real-world ……

touching the floor. As long as an object's centre of gravity is above this base of support, the object..., it automatically (自动地) controls its wheels under its centre of gravity. So a bicycle can balance if its wheels ……

a choice because of no gravity. They may pick their food with their hands and put it into their mouths ……

Astronauts in space cannot belch (打嗝). Without gravity, gas cannot separate from liquids in their stomachs. ……

信不信由你Astronauts can’t cry properly in space because there’s no gravity (重力) to make tears fall. ……

solves the three Ws: No more worrying, wandering or waiting around.”Gravity jet suitIf you’re a big fan of Iron Man, you must have been impressed by his amazing jet suit. Now, there is a real gravity ……

Station, because there is zero gravity, astronauts have to use straps (带子) to hold themselves... of this challenge are high. For one, a winning design must be hands-free and usable when an astronaut ……

hands. But an Indian 18-year-old has built one that’s easier to pick up than a smartphone. Rifath...轨道速度的) flight. The tiny satellite will work for 12 minutes in a micro-gravity (微重力) space environment ……

on Earth, because gravity (重力) pulls your solid and liquid wastes down, away from you. But in the gravity-free environment of space, waste tends to just float around.Since the early days ……

Gravity is not responsible for people falling in love.~ Mark Twain (American writer)~ Mark Twain (American writer)Life is the flower for which love is the honey.~ Victor Hugo (French writer)~ Victor ……

A black hole has strong gravity (重力). If you fell into a black hole, you would stretch out (拉成) like spaghetti (意大利细面条). ……

because of gravity (引力). Most things in space, such as moons and planets, are round. That’s mostly because of gravity (引力). A planet’s gravity pulls all its matter (物质) to its center. To find ……

from floating away.Weightlessness (失重) is a major consideration for the astronaut.Gravity is what... with their hands.HELPspacesuit n. 宇航服float away: 飘走bolt v. 栓住shuttle n. (织机的)梭，文中指“航天飞机”conduct v ……