Tag

Equator

All articles tagged with #equator

science-and-technology1 month ago•6 min saved

Rockets at the Equator: The Real Physics Behind Launch Sites

Spaceflight requires enormous fuel because the payload-to-fuel ratio follows the Tsiolkovsky equation, so engineers continuously seek to reduce mass and optimize launch conditions. Launching from mountains offers only marginal altitude benefits and is often not cost-effective due to logistics. The biggest performance boost comes from launching near the equator, leveraging Earth’s spin—especially for geostationary-orbit missions—while polar or inclined orbits gain less from equatorial sites. Practically, site choice balances physics with logistics and cost, so most launch sites are at mid to low latitudes and launch eastward to ride Earth's rotation.

via BBC Sky at Night Magazine|

#equator #geostationary-orbit #launch-sites

space-exploration1 month ago•107 min saved

Artemis II’s Glover: equatorial Moon landings first, pole can wait

Artemis II pilot Victor Glover argues NASA should prioritize an equatorial Moon landing rather than rushing a south-pole target, citing safer daylight windows and easier emergency aborts. The idea aligns with updated Artemis IV plans that favor a more direct translunar path (potentially via SpaceX’s Starship) and reduce reliance on NRHO, aiming to accelerate lunar access while keeping pole landings as a longer-term objective.

via Space|

#artemis #equator #moon

space2 months ago•3 min saved

Banana Orbits: Why Rockets Curve East to Reach Orbit

Rockets don’t fly straight; they perform a gravity turn, curving eastward along a brachistochrone-like path to gain speed with minimal fuel. This tilt helps rockets reach orbit by balancing thrust and gravity as they travel downrange, taking advantage of Earth’s rotation—especially near the equator—to maximize boost. Suborbital flights go up and back down, but orbital missions require a stable, perpetual fall around Earth, achieved by maintaining the right downrange velocity and trajectory.

via Jalopnik|

#earths-rotation #equator #gravity-turn

space4 months ago•7 min saved

Hidden Equatorial Ice Could Redefine Mars Missions

ESA's Mars Express radar data reveal buried, ice-rich deposits up to 3.7 km thick in the Medusae Fossae Formation along Mars' equator, hinting at a vast ancient water reservoir. If confirmed, it could provide a near-equatorial water source for future missions and shed light on Mars's climate history; direct sampling hasn't occurred yet, and SHARAD data will be used to tighten the case.

via Indian Defence Review|

#equator #mars #marsis-radar

science10 months ago•3 min saved

Martian Volcanoes and Ice Deposits: Unveiling the Red Planet's Climate History

Ancient volcanic eruptions on Mars may have released water vapor that froze into ice, potentially creating significant underground ice deposits near the equator, which could be valuable for future human exploration. The study suggests repeated eruptions over millions of years could have contributed to these ice deposits, although further research is needed to confirm their presence and composition.

via Space|

#equator #ice-deposits #mars

space-exploration2 years ago•4 min saved

"Vast Water Ice Reservoir Found Near Mars' Equator"

Data collected by the Mars Express orbiter suggests the presence of a large water ice deposit near Mars' equator, potentially indicating that the planet may have once supported life. The discovery was made using the orbiter's MARSIS instrument, which detected thick ice deposits extending up to 3.7 kilometers below the surface. The findings, published in Geophysical Research Letters, raise questions about Mars' climate history and could make the area near the equator an ideal landing spot for future exploration missions.

via VOA Learning English|

#equator #mars #mars-express

space-exploration2 years ago•1 min saved

"Discovery of Vast Equatorial Ice Reserves Redefines Understanding of Martian Water"

The European Space Agency's Mars Express spacecraft has discovered a massive reserve of frozen water ice beneath Mars' equator, with enough water to cover the entire planet in an ocean at least 5 feet deep. The ice deposit, some 2.3 miles thick, is heavily contaminated by dust and topped by a crust of hardened ash and dry dust, but its low density and transparency indicate the presence of frozen water. This finding suggests that large quantities of water ice may have formed along the equator billions of years ago before being buried by volcanic ash, potentially offering a valuable resource for future human missions to Mars.

via Newser|

#equator #european-space-agency #ice

space2 years ago•5 min saved

"Massive 2-Mile Thick Water Ice Deposit Discovered at Mars' Equator"

The European Space Agency's Mars Express mission has discovered a substantial amount of water ice buried beneath Mars' equator, measuring up to 2.3 miles thick and extending 3000m underground. This finding challenges previous assumptions about the planet's geology and climate history, suggesting that Mars may have had a different climate in the past due to variations in its axial tilt. The ice, heavily contaminated by dust, is difficult to access but could provide valuable resources for future crewed missions.

via Space.com|

#equator #european-space-agency #mars

science3 years ago•3 min saved

The Equator's Role in Hurricane Formation.

Hurricanes almost never form at the equator due to the Coriolis effect, which controls the direction in which tropical cyclones spin. The Coriolis effect is weak near the equator but becomes stronger as latitude increases. Higher latitudes have faster-spinning winds to help drive tropical cyclone growth. Climate change does not significantly affect the rotation of the Earth, so it won't directly impact the chances of a hurricane crossing the equator.

via Livescience.com|

#coriolis-effect #earths-rotation #equator

space3 years ago•4 min saved

Equatorial Glacier Found on Mars Raises Hope for Human Exploration

Scientists have discovered a relict glacier near the equator of Mars, indicating the presence of surface water ice on the planet in recent history. The glacier is estimated to be 6 kilometers long and up to 4 kilometers wide, with a surface elevation ranging from +1.3 to +1.7 kilometers. The discovery suggests the potential existence of ice at shallow depths in the region, which could have crucial implications for future human exploration. The glacier's fine-scale features, its associated sulfate salts deposit, and the overlying volcanic materials are all very sparsely cratered by impacts and must be geologically young, likely Amazonian in age, the latest geologic period which includes modern Mars.

via SciTechDaily|

#equator #glacier #human-exploration

space3 years ago•5 min saved

Possible Water Ice at Low Latitudes on Mars Explained by Modern Glacier Discovery

Scientists have discovered a relict glacier near the equator of Mars, suggesting the presence of surface water ice on the planet in recent times. The glacier is estimated to be 6 kilometers long and up to 4 kilometers wide, with a surface elevation ranging from +1.3 to +1.7 kilometers. The discovery raises the possibility that ice may still exist at shallow depths in the area, which could have significant implications for future human exploration.

via Phys.org|

#equator #exploration #glacier