Polysaccharides are the most abundant carbohydrates. A polysaccharide molecule can contain thousands of glucose units. These highly complex carbohydrates include starches, cellulose, and glycogen. Starch is the usual form in which carbohydrates are stored as energy by plants.Plants can split starch into its simpler glucose units for use as energy when needed. Cellulose is known as a structural carbohydrate because of the fibers formed by its molecules.tarch is the usual form in which carbohydrates are stored as energy by plants. Plants can split starch into its simpler glucose units for use as energy when needed. Cellulose is known as a structural carbohydrate because of the fibers formed by its molecules.
When a meteoroid, comet, or asteroid enters Earth's atmosphere at a speed typically in excess of 20 km/s (72,000 km/h; 45,000 mph), aerodynamic heating of that object produces a streak of light, both from the glowing object and the trail of glowing particles that it leaves in its wake. This phenomenon is called a meteor or shooting star.
View. comments. A fridge-sized asteroid has crashed into the Moon, in the largest lunar collision with a space rock ever captured on video. Incredible video footage has emerged of the spectacular fireball created as the asteroid impacted the Mare Nubium, a lava-filled basin on the moon.aught on camera, the moment fridge-sized asteroid smashed into moon in largest lunar collision ever recorded. 1  Spanish astronomer films asteroid hitting the moon. 2  Impact creates longest and brightest afterglow ever recorded. 3  Asteroid hit the moon at 61,000 kilometres an hour.