• Common name : Oregano • Scientific name : Origanumvulgare subsp. gracile • Family : Lamiaceae • Native land : Kyrgyzstan Oregano is a perennial herb. It is a bushy, semi-woody, sub-shrub with upright or spreading stems and branches. The aromatic leaves are oval-shaped. The leaves may be clipped fresh as needed or dried for […]
A radio telescope is a form of radio receiver used in astronomy. Distant stars and planets are observed with the help of a telescope. Stars give out light radiation. Some part of this radiation is in form of radio waves. There are special radio receivers placed by scientists on the Earth which receive these radio
• Common name : Onion • Scientific name : Allium cepa • Family : Amaryllidaceae/Alliaceae • Native land : South-Western Asia An onion is a herbaceous biennial plant. It is grown throughout the world, chiefly in the temperate zones. Most members of this family have an underground storage system, such as a bulb or tuber.
A supernova is the explosion of a star. It is one of the largest explosions in space. Due to the dust present in the Milky Way, supernovas are difficult to observe. Astronomer Johannes Kepler discovered the last observed supernova in the Milky Way. Supernovas take place when changes occur in the centre of a star.
• Common name : Nodding Onion, Lady’s Leek • Scientific name : Allium cernuum • Family : Amaryllidaceae • Native land : Canada to Mexico Nodding onion is a perennial plant. It consists of a tuft of basal leaves from which one or more flowering stalks emerge. The leaves are grass-like, wide, keeled along the
• Common name : Bitter Nightshade, Violet Bloom • Scientific name : Solanumdulcamara • Family : Solanaceae • Native land : Europe and Asia Bitter nightshade is a perennial climbing or trailing vine. It reproduces by seeds and rooting at the nodes of the prostrate stems. The plant has two leaf forms that, along with
• Common name : Nasturtium, Monks Cress • Scientific name : Tropaeolummajus • Family : Tropaeolaceae • Native land : South America Nasturtium is an annual and perennial herbaceous flowering plant. This variety includes climbing, dwarf, and bushy types. The stems and leafstalks are pale green in colour, hairless and somewhat fleshy. The green or
A black hole is a place with immense gravitational pull. The pull is so huge that not even a light ray can escape it. The reason behind such a strong pull is that a lot of matter has been squeezed into a small space. Black holes are observed when a star is in its last
• Common name : Mustard Green • Scientific name : Brassica juncea • Family : Brassicaceae • Native land : Russia to Central Asia Mustard green is an annual, cruciferous vegetable. Mustard green has pale green foliage, with some hair on the first leaves. The lower leaves are deeply lobed, while the upper leaves are
• Common name : Great Mullein • Scientific name : Verbascumthapsus • Family : Scrophulariaceae • Native land : Europe and in temperate Asia, and North America Mullein is a hairy biennial plant. It is a common weedy plant that spreads by prolifically producing seeds. Its small yellow flowers are densely grouped on a tall
A falling body is anything that falls to the ground and is pulled towards it by gravitational force. Every object in space, including the Earth has attractive force, which pulls other bodies towards it. Law of a falling body was discovered by Galileo in 1500s. He said that in absence of air resistance bodies fall
• Common name : Mother-of-millions, Chandelier Plant • Scientific name : Bryophyllumdelagoense • Family : Crassulaceae • Native land : Africa and Madagascar Mother-of-millions is a succulent perennial plant. It reproduces rapidly, producing hundreds of tiny plantlets which quickly form new colonies. It is adapted to dry conditions and can survive long periods of drought.
A sundial is a type of an ancient clock that indicates the day timing by the position of the shadow of a particular object exposed to sunlight. The position of the shadow changes with the movement of the Sun in the sky. Hence, the passage of time is recorded with respect to the position of
Ultraviolet (UV) rays are a form of radiation just like light rays, x-rays, heat rays, etc. These rays are produced by the Sun naturally. They have a short wavelength and are highly penetrable. The harmful effects of these rays include reddening of the skin, suntan, aging and carcinogenic changes. However, most of the UV rays
The Sun is the nearest star to the Earth. The surface temperature of the Sun is about 6000°C. At this temperature, a metal or even a rock can get converted into gas. Hence, the Sun is referred to as a burning ball of gases. The reason behind this non-stop burning is the capability of the