How many galaxies in the universe?

Galaxy is the collection of so many stars, dark matter, dark energy and gas.

[{"selector":"#anim-c2e0bd64-1ba0-4fb9-8673-d5a4c1bcbfb8 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(0%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-db03bcea-6792-4305-95c1-0f0eb12a6779","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-5d20c4ef-8d1d-4890-a227-a7f47b399228","keyframes":{"transform":["translate3d(-119.83472%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-50c02202-190d-4874-a76f-11273d1108e5","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-fca6c746-fab4-43f5-915f-9b1e9ff13e70","keyframes":{"transform":["translate3d(0px, 100.54080%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f28e7289-cd65-409d-b456-69b75e4e8af1","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-21ce952f-e261-407d-98b2-1b8c8437e75d","keyframes":{"transform":["translate3d(0px, 178.45415%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

This image of Hubble telscope, which is called Hubble eXtreme Deep Field (XDF).

[{"selector":"#anim-50873ccc-5c15-40d5-bc8c-77db82c353db","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-26fead2f-ad3c-4b7a-af73-a34b0a7ba6d1","keyframes":{"transform":["translate3d(-119.83472%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f3bf176c-f098-46e9-b541-a3fc5d13b176","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-6f4a0203-886b-4f5f-bf80-609b9480d0ed","keyframes":{"transform":["translate3d(0px, 100.54080%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-af93209a-e668-4bff-ba57-f100a6126675","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-81731a07-3f6c-47e6-a5d7-b1aa8f22f78a","keyframes":{"transform":["translate3d(0px, 150.84878%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-13f33da7-6acd-415b-a675-45a15586c35e [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(0%, 0, 0) translate(25%, -0.00017460558357385025%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}]

That image is made by combining 10 years of photographs of Hubble telescope.

[{"selector":"#anim-f22cb8b4-51b5-4ba4-b6a6-5746c3986bd5 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(0%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-81fc900c-ea15-4640-8662-b2cc9d1b5934","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-8ed32c1d-8425-4381-a9b5-ec04a4002465","keyframes":{"transform":["translate3d(-119.83472%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-0d4c656f-45ff-4c2d-b277-f53b52b7dbf4","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-8136313d-4cef-45d9-8274-bb0f5986fdbd","keyframes":{"transform":["translate3d(0px, 100.54080%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-2c5bfb06-b5f7-4ac6-bcc2-dab47d839915","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-d7170144-ae63-4a39-a926-63bf13c82950","keyframes":{"transform":["translate3d(0px, 180.19326%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

On the basis of Hubble Telescope XDF, calculation shows that there are approximately

[{"selector":"#anim-3328959d-73a0-4322-abdc-a0ad767219f1 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(0%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-1d1c636e-a07d-40fe-bdc9-e004e0b93eb3","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f7e64eca-5cba-4e89-b82d-1cd2e9ce8d69","keyframes":{"transform":["translate3d(-119.83472%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a869598e-8538-4fec-85ba-40002ba2fd03","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-581b40c5-2ba6-4ec9-ac36-d456f37640b8","keyframes":{"transform":["translate3d(0px, 100.54080%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-083b9e51-2338-483a-8741-2d314f022d95","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a699fa4f-d068-48c4-b199-41a5e31cf71d","keyframes":{"transform":["translate3d(0px, 181.06286%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

There are approximately 200 billion to 2 trllion galaxies in the observable Universe.

[{"selector":"#anim-a4acd8c9-8a76-4a48-9f53-f999c65219f6 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(0%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-ab17a2c6-c26e-4a49-8234-e0b53caf2ce4","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f5ca997a-e70c-4e13-95c5-032f2f44fc62","keyframes":{"transform":["translate3d(-119.83472%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-8dacd7fe-b6cd-4ace-8cec-8772f377c173","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-1d88f2ce-2c5f-46fd-83a2-eec4759eb212","keyframes":{"transform":["translate3d(0px, 100.54080%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-92c038a9-33d9-4c1c-bc58-bfce698c6b45","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-3869be12-41bd-4c04-abf6-cc99ac7fee32","keyframes":{"transform":["translate3d(0px, 185.28265%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}]

Most galaxies diameter is in between 3,000 to 300,000 light years.

[{"selector":"#anim-cab61a4b-10e7-4873-b7ff-3949a536e44c","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-10cc4237-4628-429a-a842-dad88c396a29","keyframes":{"transform":["translate3d(-119.83472%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-df56c905-3cab-4167-8c72-6ee7d204c514","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-395afd24-f466-46f5-9177-ef89a88c9ac5","keyframes":{"transform":["translate3d(0px, 100.54080%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-5493a3d1-e772-4176-90d7-c966f31ac0bd","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a2091b86-7e79-4991-997b-d86e046254bb","keyframes":{"transform":["translate3d(0px, 186.15989%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-0d9726f7-5c8c-4fa8-95f7-6257f5243bc1 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(0%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}]

Our Milky way galaxy has a diameter of around 87,400 light years.

[{"selector":"#anim-a8ba9b4c-a98d-4d19-989a-39db78f592a6","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b532c333-2bb3-4bec-8460-9811cce18570","keyframes":{"transform":["translate3d(-119.83472%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-814ae5ee-2397-4d44-ab2d-95ed78f75136","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b046440d-a320-43d2-95b8-607ee0350163","keyframes":{"transform":["translate3d(0px, 100.54080%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-d1ac1634-3844-4040-8e6e-439f209b90e5","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-3e248916-cf1c-477e-baf5-6369e437ce48","keyframes":{"transform":["translate3d(0px, 184.54113%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-91930694-6e8a-4a87-8199-ac09111983f9 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(0%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}]

Milky Way galaxy has approximately 69 satellite galaxies.

[{"selector":"#anim-dcc22b24-1cb7-4b97-838c-5171ac6a0a1e","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-6b20461d-b7c3-4426-93db-2fb6f6f8d2f4","keyframes":{"transform":["translate3d(-119.83472%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c2192ff1-70ec-4fbc-887b-8901d02e4787","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-aa3f7a37-1496-43ce-a686-30eec6b72aba","keyframes":{"transform":["translate3d(0px, 100.54080%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-d43b653d-b825-49ac-94d6-67bb215cf8a3","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ff8a4d74-c39b-4477-963e-901c0e6237d3","keyframes":{"transform":["translate3d(0px, 232.81651%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-cdbf33b8-d040-4a15-a01e-9bb0986f3d66 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(0%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}]

In which Andromeda is the nearest and largest galaxy, which has diameter of 2.5 million light years.

[{"selector":"#anim-fce8a01c-14ac-4ae7-a039-f8c0769d2979","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ccec1582-5360-4def-b2d6-007fa4d61ab1","keyframes":{"transform":["translate3d(-119.83472%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a3e19320-7fba-4513-8c32-7721e8992ffb","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f2f93c87-a7d7-46a9-af05-fa22ea9a7767","keyframes":{"transform":["translate3d(0px, 100.54080%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-3ed63210-3361-47ed-9732-79dec361d7af","keyframes":{"opacity":[0,1]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4ad365be-437b-46ac-a534-028e6c08ceec","keyframes":{"transform":["translate3d(0px, 179.32370%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-3c488037-1c0d-4754-9f08-2ef934ad3261 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(0%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}]

Swipe Up To Read More

[{"selector":"#anim-b02c14ca-20f3-4856-ab85-c22e678711c5 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(18.51679085373723%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"fill":"forwards"}] [{"selector":"#anim-99ffd49a-35be-4ec8-aea1-5ab4f1ea8b5e","keyframes":{"opacity":[0,1]},"delay":100,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4c54c8f6-2c9f-4c1d-911f-81e7b8bdd2e1","keyframes":{"transform":["translate3d(0px, -157.18441%, 0)","translate3d(0px, 0px, 0)"]},"delay":100,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4b4e0f5a-e4cc-47dd-a254-268093482353","keyframes":{"opacity":[0,1]},"delay":100,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-7e778b48-576e-4ef7-94b0-7f9f995c91f4","keyframes":{"transform":["translate3d(-114.87342%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":100,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-bf83dbc2-1bd3-4e22-9b94-f25a2513f44b","keyframes":{"opacity":[0,1]},"delay":100,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-6d860fe2-eaea-4a13-b6fb-3aefd9faa686","keyframes":{"transform":["translate3d(115.50632%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":100,"duration":1800,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] SWIPE UP